#Drupal 11 compatibility

Automatically closed - issue fixed for 2 weeks with no activity.

prudloff → changed the visibility of the branch 3428552-automated-update-d11-stable-1.4 to hidden.

prudloff → changed the visibility of the branch project-update-bot-only to hidden.

@prudloff, I believe the correct one to review is MR !4

usingsession → changed the visibility of the branch 3428552-drupal-compatibility-fixes to hidden.

Automatically closed - issue fixed for 2 weeks with no activity.

If you can confirm me this is working well on Drupal 11, I will be able to publish soon a new release. ?

Thanks. Committed

Patch would not apply due to the "Information added by Drupal.org" bit.
Re-rolled to include that.

Already updated to Drupal 11.

Automatically closed - issue fixed for 2 weeks with no activity.

Hi,

I have applied the changes, and they are now compatible with Drupal 11 core.
Please see the attached screenshot for verification.

Thank you!

Patch #8 works well for me

Applies cleanly and makes module D11 compatible.

+1 for RTBC

Commited.

Simple change which replaces watchdog_exception with \Drupal\Core\Utility\Error::logException.

This update throws the following error :

Le site Web a rencontré une erreur inattendue.

ArgumentCountError: Too few arguments to function Drupal\Core\Config\ConfigImporter::__construct(), 10 passed in /var/www/html/drupal/web/modules/contrib/config_suite/src/ConfigSuiteImportSubscriber.php on line 51 and exactly 11 expected in Drupal\Core\Config\ConfigImporter->__construct() (line 204 of core/lib/Drupal/Core/Config/ConfigImporter.php).
Drupal\config_suite\ConfigSuiteImportSubscriber->checkForRedirection(Object, 'kernel.request', Object) (Line: 246)
Symfony\Component\EventDispatcher\EventDispatcher::{closure:Symfony\Component\EventDispatcher\EventDispatcher::optimizeListeners():241}(Object, 'kernel.request', Object) (Line: 206)
Symfony\Component\EventDispatcher\EventDispatcher->callListeners(Array, 'kernel.request', Object) (Line: 56)
Symfony\Component\EventDispatcher\EventDispatcher->dispatch(Object, 'kernel.request') (Line: 159)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 53)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 116)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 90)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 709)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

On every page of my website when I'm logged in as an admin. Do I create a new issue on the 2.0.5 release?

Automatically closed - issue fixed for 2 weeks with no activity.

thanks for your work on this, keen to see a D11 release shipped soon.

To be released as 2.0.0.

elc → closed merge request !4

I generated a copy of the latest patch from the Merge Request to facilitate anyone using the composer-lenient plugin to allow this to be installed and patched until the maintainers merge it.

We now have 4 MRs on this issue, which one should be reviewed?

Automatically closed - issue fixed for 2 weeks with no activity.

This module depends on the Drupal Authentication SimpleSAMLphp module , which depends on SimpleSAMLphp which , at present , depends on Symfony 6.

SimpleSAMLphp will release a version compatible with the Symfony 7 only when Symfony 7 LTS will be release in November 2025.

For reference: https://symfony.com/releases/7.4

So this module is blocked and will not receive a Drupal 11compatible release until November this year.

Automatically closed - issue fixed for 2 weeks with no activity.

+1 for this do not let it die please.

I am having trouble applying patch #4.

I added the patch:
"drupal/tiny_slider": {
"Automated Drupal 11 compatibility fixes for tiny_slider": " https://www.drupal.org/files/issues/2025-02-11/3435003-4.patch → "
}

I added the module to drupal-lenient:

I then run composer require 'drupal/tiny_slider:1.1.x-dev@dev'

...and it seems to install the module but not the patch. Thanks so much for the help.:

Installing dependencies from lock file (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
- Syncing drupal/tiny_slider (dev-1.1.x 73e799c) into cache
Gathering patches for root package.
Gathering patches for dependencies. This might take a minute.
- Installing drupal/tiny_slider (dev-1.1.x 73e799c): Cloning 73e799cd70 from cache
- Applying patches for drupal/tiny_slider
https://www.drupal.org/files/issues/2025-02-11/3435003-4.patch → (Automated Drupal 11 compatibility fixes for tiny_slider)
Could not apply patch! Skipping. The error was: Cannot apply patch https://www.drupal.org/files/issues/2025-02-11/3435003-4.patch →

I'll argue that a module isn't "good to go" if its automated tests aren't running, which was the case here because a .gitlab-ci.yml hadn't been added yet. I added one and am setting the status back to Needs Review. A maintainer needs to review the testing configuration and enable/disable options that they want to support.

I also removed Drupal 9 from all of the info.yml Core compatibility strings. GitLab CI can't test against it, so you can't guarantee compatibility. A breaking change may be introduced and you wouldn't know until someone filed a bug report unless you're running the tests yourself. I've done this in the modules I maintain and encourage others to do the same. I typically release a new minor version when doing this. It isn't necessary to release a new major version.

As for everyone else asking for this to be committed: I checked the most recently-active maintainer's user profile page. He mentions that he's been serving in the Ukrainian National Guard. So I wouldn't expect a fast response. My own plan is to copy the module and this compatibility fix to a private GitHub mirror until an update is made. I'm not interested in maintaining the module because I know nothing about it or the Mailgun service yet. This is my first day of using it.

Done

https://www.drupal.org/project/config_suite/releases/2.0.5 →

Automatically closed - issue fixed for 2 weeks with no activity.

Drupal 11 support has already been added.

Automatically closed - issue fixed for 2 weeks with no activity.

Anything new on this issue? Is there anything we can do to push the d11 compatibility soon?

Hi,

I have applied the changes, and they are now compatible with Drupal 10.4.8 core.
Please see the attached screenshot for verification.

Thank you!

Automatically closed - issue fixed for 2 weeks with no activity.

1.
------ ---------------------------------------------------------------------------------------------------------------------------------------------
Line entity_language_fallback.module
------ ---------------------------------------------------------------------------------------------------------------------------------------------
124 Call to deprecated method filterValidItemIds() of class Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback:
in search_api:8.x-1.22 and is removed from search_api:2.0.0.
Use
\Drupal\search_api\Plugin\search_api\datasource\ContentEntityTrackingManager::filterValidItemIds()
instead.
184 Call to deprecated method filterValidItemIds() of class Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback:
in search_api:8.x-1.22 and is removed from search_api:2.0.0.
Use
\Drupal\search_api\Plugin\search_api\datasource\ContentEntityTrackingManager::filterValidItemIds()
instead.

regarding above deprecated issues are already taken care by creating wrapper in filterValidItemIds method:
In entity_language_fallback/src/Plugin/search_api/datasource/ContentEntityFallback.php file in 8.1.x. we will ignore this error.

2.

$languages and $fallback_chain properties added in src/Plugin/search_api/datasource/ContentEntityFallback.php in #7 patch.

You can verify entity-language-fallback-drupal-11-compatibility-fixes-3430185-7.patch by

downloading https://git.drupalcode.org/project/entity_language_fallback.git into your drupal 11 instance and apply the #7 patch.

* enable the entity_language_fallback module

* Create multiple languages in /admin/config/regional/language.
for example :- default language English , add French and Spanish as a new languages to the site.

* Edit each language and select fallback languages .
for example :- Edit Spanish and select French as language fallback in priority 1, select English as language fallback in priority 2

* Now create a content and add translation for few languages .
for example :- If you created the node/1 in default language English , add translation for French.

* Now try to access the content in spanish /es/node/1 it should show french version content.

MR3 looks RTBC to me.

usingsession → closed merge request !8

abhinesh → closed merge request !6

abhinesh → changed the visibility of the branch 3435733-d11 to hidden.

abhinesh → changed the visibility of the branch 3435733-automated-drupal-11 to hidden.

That's the patch I used in addition if somebody has the same issue.

Just for information we encountered an issue on Drupal 11 where isFunction is undefined.

THe following code crashes:
$.isFunction($.colorbox)

I believe the latest version of JQuery that comes with Drupal 11 doesn't have isFunction anymore.

I have confirmed that this patch is the only modification required to allow it in Drupal 11. Moving to RTBC

Automatically closed - issue fixed for 2 weeks with no activity.

Automatically closed - issue fixed for 2 weeks with no activity.

Automatically closed - issue fixed for 2 weeks with no activity.

Automatically closed - issue fixed for 2 weeks with no activity.

Looks good to me. Please merge and cut a release. Thanks!

Follow-up for the release is 📌 Drupal 11 release Active .

Automatically closed - issue fixed for 2 weeks with no activity.

Same patch as #23, but re-rolled so it applies correctly on top of 2.0.0.

About 3428552-drupal-compatibility-fixes-stable-1.4 - I tried to create a patch for module1.4, but composer.json always fails.
!MR6 - also fails

Automatically closed - issue fixed for 2 weeks with no activity.

Automatically closed - issue fixed for 2 weeks with no activity.

usingsession → changed the visibility of the branch 3428552-drupal-compatibility-fixes-stable-1.4 to hidden.

After rebasing on 3.0.x, the patch #16 is no longer necessary.

Apologies for the noise, just wanted to fix a fatal on D11 (login flow).

Attached patch from current work in MR!5.

jedihe → changed the visibility of the branch 3431749-d11_ready to active.

jedihe → changed the visibility of the branch 3431749-d11_ready to hidden.

Automatically closed - issue fixed for 2 weeks with no activity.

Automatically closed - issue fixed for 2 weeks with no activity.

Automatically closed - issue fixed for 2 weeks with no activity.

Bump

Love this module and would like to upgrade my site to D11. Any change this small fix can be merged and a new release cut? Thanks!

kelly.m.jacobs → made their first commit to this issue’s fork.

kelly.m.jacobs → made their first commit to this issue’s fork.

Reports after the above PR

 drush upgrade_status:analyze cache_browser
 [notice] Processing /var/www/html/docroot/modules/contrib/cache_browser.

================================================================================
Cache browser,  1.0.0
Scanned on Wed, 11 Jun 2025 - 12:08

No known issues found.

Automatically closed - issue fixed for 2 weeks with no activity.

Closing as duplicate of 📌 D11 Compatibility Active

Automatically closed - issue fixed for 2 weeks with no activity.

jeeva r → made their first commit to this issue’s fork.

In PR4 Issue #3428552: Drupal 11 compatibility fixes for config_override_warn everything looks ok.
But I created new PR based on it, because in my opinion, I see no reason to wait for Drupal 12 to remove it.

Some more changes are needed. See attached patch.

luke.stewart → made their first commit to this issue’s fork.

OK, but I had already made that change in the MR before either of you commented about it. So the error message must be due to something else.

Apologies - I didn't mean to be confusing.

The case change was unrelated to the PHPUnit failure - it was to do with failed PHPCS run in the validate stage of the pipeline after commit b19950b8 : https://git.drupalcode.org/issue/flysystem_s3-3430648/-/jobs/5477376

The validate stage is now passing again following commit a7d997cb .

Tested and working.

kelly.m.jacobs → made their first commit to this issue’s fork.

Updated this for D11.

Posted a related deprecation patch for core flysystem's ImageStyleCopier.php file in the 3.0 D11-compatibility issue 📌 Automated Drupal 11 compatibility fixes for flysystem Needs review - I think that's the correct place.

In trying to work on D11 compatibility for the flysystem_s3 submodule 📌 Automated Drupal 11 compatibility fixes for flysystem_s3 Needs review as well, it appears Symfony’s EventSubscriberInterface::getSubscribedEvents() is defined to return an array, and core’s Flysystem integration must match or you’ll get deprecation warnings.

This patch simply adds : array to getSubscribedEvents() in core/modules/flysystem/src/ImageStyleCopier.php to address the deprecation.

robloach → closed merge request !9

I tested thoroughly both with CKEditor 5 and with a plain textarea. When CKEditor 5, the module does not interfere with CKEditors growth, and with a plain text area growth starts to work. I'm merging.

I can not fork this project, so here is a patch for Drupal 11 support.

The patch updates the core_version_requirement in domain_microsite.info.yml to include Drupal 11.

To apply the patch:
1. Download the attached patch file
2. Apply it using: `git apply domain_microsite-drupal11.patch`

The changes are minimal and only affect the info.yml file to add Drupal 11 compatibility.

So I capitalized null in the test as well, and now I don't understand what phpunit is saying about why it is failing.

OK, but I had already made that change in the MR before either of you commented about it. So the error message must be due to something else.

@benstallings

I think @eli-t's comment means it should be:

--- a/src/AwsCacheAdapter.php
+++ b/src/AwsCacheAdapter.php
@@ -38,7 +38,7 @@ class AwsCacheAdapter implements CacheInterface {
public function get(string $key): mixed {
if ($item = $this->cache->get($this->prefix . $key)) {
return $item->data;
}
- return false;
+ return NULL;
}

public function set(string $key, mixed $value): void {

any update on making this d11 ready?

Handling this in https://www.drupal.org/project/disqus/issues/3296968 📌 Automated Drupal 10 compatibility fixes Needs review

robloach → closed merge request !20

Thanks for all the ongoing work on this.

Just want to remind folks we need to use FALSE and NULL rather than false and null for coding standards!

Marking this issue as fixed as this was merged into current development version of this module and it will be included in the next stable release of this module.

jernejmramor → closed merge request !20

Can we get a release please?

php vendor/bin/drupal-check -d web/modules/custom/entity_language_fallback/
Deprecated: The drupal_root parameter is deprecated. Remove it from your configuration. Drupal Root is discovered automatically. in /var/www/html/vendor/mglaman/phpstan-drupal/src/Drupal/DrupalAutoloader.php on line 94
7/7 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%

------ --------------------------------------------------------------------------
Line entity_language_fallback.module
------ --------------------------------------------------------------------------
37 Call to an undefined method
Drupal\Core\Form\FormInterface::getEntity().
105 Access to an undefined property
Drupal\Core\Entity\ContentEntityInterface::$search_api_skip_tracking.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
142 Access to an undefined property
Drupal\Core\Entity\ContentEntityInterface::$search_api_skip_tracking.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
152 Variable $fallback_controller in isset() always exists and is not
nullable.
162 Access to an undefined property
Drupal\Core\Entity\ContentEntityInterface::$original.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
220 Access to an undefined property
Drupal\Core\Entity\ContentEntityInterface::$search_api_skip_tracking.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
243 Parameter $index of function
entity_language_fallback_search_api_index_items_alter() has invalid
type Drupal\search_api\IndexInterface.
245 PHPDoc tag @var for variable $item contains unknown class
Drupal\search_api\Item\Item.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
246 Call to method getOriginalObject() on an unknown class
Drupal\search_api\Item\Item.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
249 Call to method setLanguage() on an unknown class
Drupal\search_api\Item\Item.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
------ --------------------------------------------------------------------------

------ --------------------------------------------------------------------------
Line src/AccessHelper.php
------ --------------------------------------------------------------------------
49 Access to an undefined property
Drupal\Core\Entity\ContentEntityInterface::$search_api_skip_tracking.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
64 Access to an undefined property
Drupal\Core\Entity\ContentEntityInterface::$preventLooping.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
------ --------------------------------------------------------------------------

------ --------------------------------------------------------------------------
Line src/FallbackController.php
------ --------------------------------------------------------------------------
49 Access to an undefined property
Drupal\entity_language_fallback\FallbackController::$entityTypeManager.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
------ --------------------------------------------------------------------------

------ -------------------------------------------------------------------------------------------------------------
Line src/Plugin/search_api/datasource/ContentEntityFallback.php
------ -------------------------------------------------------------------------------------------------------------
28 Class
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback
extends unknown class
Drupal\search_api\Plugin\search_api\datasource\ContentEntity.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
42 Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::create()
calls parent::create() but
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback
does not extend any class.
70 Call to an undefined method
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::getEntityStorage().
72 Call to an undefined method
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::getBundles().
77 Access to an undefined property
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::$languages.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
84 Access to an undefined property
Drupal\Core\TypedData\ComplexDataInterface::$language.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
93 Access to an undefined property
Drupal\Core\TypedData\ComplexDataInterface::$language.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
94 Access to an undefined property
Drupal\Core\TypedData\ComplexDataInterface::$fallbackLanguage.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
106 Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::getPartialItemIds()
calls parent::getPartialItemIds() but
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback
does not extend any class.
113 Call to static method splitPropertyPath() on an unknown class
Drupal\search_api\Utility\Utility.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
118 Call to an undefined method
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::getEntityStorage().
119 Access to an undefined property
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::$languages.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
125 Access to an undefined property
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::$fallback_chain.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
138 Variable $item_ids might not be defined.
145 Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::getLanguages()
calls parent::getLanguages() but
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback
does not extend any class.
147 Access to an undefined property
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::$languages.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
149 Access to an undefined property
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::$fallback_chain.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
163 Call to static method loadMultiple() on an unknown class
Drupal\search_api\Entity\Index.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
217 Parameter $index of method
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::filterValidItemIds()
has invalid type Drupal\search_api\IndexInterface.
217 Parameter $index of method
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::filterValidItemIds()
has invalid type Drupal\search_api\IndexInterface.
218 Class
Drupal\search_api\Plugin\search_api\datasource\ContentEntityTrackingManager
not found.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
222 Call to static method filterValidItemIds() on an unknown class
Drupal\search_api\Plugin\search_api\datasource\ContentEntity.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
231 Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::getItemAccessResult()
calls parent::getItemAccessResult() but
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback
does not extend any class.
233 Call to an undefined method
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::getEntity().
235 Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::getItemAccessResult()
calls parent::getItemAccessResult() but
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback
does not extend any class.
238 Call to an undefined method
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::getEntityTypeManager().
239 Call to an undefined method
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallback::getEntityTypeId().
------ -------------------------------------------------------------------------------------------------------------

------ -----------------------------------------------------------------------------------------------------------------------
Line src/Plugin/search_api/datasource/ContentEntityFallbackDeriver.php
------ -----------------------------------------------------------------------------------------------------------------------
10 Class
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallbackDeriver
extends unknown class
Drupal\search_api\Plugin\search_api\datasource\ContentEntityDeriver.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
17 Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallbackDeriver::getDerivativeDefinitions()
calls parent::getDerivativeDefinitions() but
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallbackDeriver
does not extend any class.
19 Call to an undefined method
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallbackDeriver::t().
21 Access to an undefined property
Drupal\entity_language_fallback\Plugin\search_api\datasource\ContentEntityFallbackDeriver::$derivatives.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
------ -----------------------------------------------------------------------------------------------------------------------

------ ----------------------------------------------------------------------------------------
Line src/Plugin/search_api/processor/FallbackLanguage.php
------ ----------------------------------------------------------------------------------------
25 Class
Drupal\entity_language_fallback\Plugin\search_api\processor\FallbackLanguage
extends unknown class
Drupal\search_api\Processor\ProcessorPluginBase.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
41 PHPDoc tag @var for variable $item contains unknown class
Drupal\search_api\Item\ItemInterface.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
42 Call to method getOriginalObject() on an unknown class
Drupal\search_api\Item\ItemInterface.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
52 Access to an undefined property
Drupal\Core\Entity\ContentEntityInterface::$content_translation_source.
💡 Learn more:
https://phpstan.org/blog/solving-phpstan-access-to-undefined-property
70 Variable $candidate might not be defined.
71 Variable $candidate might not be defined.
72 Call to method getDatasource() on an unknown class
Drupal\search_api\Item\ItemInterface.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
72 Call to method getIndex() on an unknown class
Drupal\search_api\Item\ItemInterface.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
72 Instantiated class Drupal\search_api\Item\Item not found.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
74 Call to method setOriginalObject() on an unknown class
Drupal\search_api\Item\Item.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
75 Call to method setLanguage() on an unknown class
Drupal\search_api\Item\Item.
💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
96 Drupal\entity_language_fallback\Plugin\search_api\processor\FallbackLanguage::create()
calls parent::create() but
Drupal\entity_language_fallback\Plugin\search_api\processor\FallbackLanguage
does not extend any class.
------ ----------------------------------------------------------------------------------------

[ERROR] Found 56 errors

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Tested locally and works as expected.
Made some minor updates in the MR to reduce boilerplate code that can be removed once the module only supports PHP 8.1+

Hope to get a D11 release soon!