Exceptions and errors on D10 site for specific form mode: supersede_datasheet

Hi @VladimirAus,

My current working theory is that you have another module in the site which is providing form mode integration which is pushing FMM out of the way.

• FMM is not providing a working link to your edit-form.supersede_datasheet form - hence the first exception
• Your site still has a link to that form - hence you still have some module stepping in to provide the route

So, need to determine

• How there is a form mode this module is not providing services; what module is stepping in?
• How to detect when this is happening
• How to get out of the way, or work with it

What happens if you exclude FMM from any processing on the node form types?

Assuming that node.supersede_datasheet is the only one causing issues, could you please turn off FMM handling for at least that mode, and probably all of those and node and see what is happening.

This will completely remove FMM services from each node content type, but it seems you have something else in there working on it. I assume that you will continue to be able to link to and use that form mode.

drush --input-format=yaml config:set "form_mode_manager.settings" form_modes.node.to_exclude "supersede_datasheet: supersede_datasheet"

To add more, use an array

drush --input-format=yaml config:set "form_mode_manager.settings" form_modes.node.to_exclude "{supersede_datasheet: supersede_datasheet,other: other}"

That should at least stop FMM from stepping into whatever other module is working with node and then see if the functionality still exists as it is being provided by a different module.

If not can you try to reproduce the error on a fresh start using the same modules?

Seems like recents commits to 📌 Automated Drupal 10 compatibility fixes RTBC fixed the issue.

supersede_datasheet is a new form view mode that I enabled for two content types.

Nothing of substance has changed in the code which would be relevant to these errors.

The code to cache the Drupal\Core\Entity\Exception\UndefinedLinkTemplateException when trying to call $entity->toUrl() you already tested and moved on to the next error.

Perhaps this was all down to cached code? Missing files? Discovery cache?

If it's working with the code from 📌 Automated Drupal 10 compatibility fixes RTBC without having changed anything your end, then this was just an aberration of switching code around. It was certainly inexplicable!

@ELC. Nope I cleaned the cache and everything as far as I'm aware.
I can try to go back to the commit and see if it will trigger the crash again.

Noting that i also received a similar error; in this case it was after trying to install the examples module (as YouTube seems to have taken teh demo videos down— and this is the first time i've been willing to click on a demo/tutorial video in a long time, lol) but it failed because this site manages to not have a body field:

Configuration objects provided by form_mode_manager_examples have unmet dependencies: field.field.node.node_form_mode_example.body
(field.storage.node.body)

However, Form Mode Manager itself *did* get installed. Maybe not fully though?

In my case, uninstalling form_mode_manager and installing it again (no example or submodules) worked. Maybe a simple cache clear would have worked too; maybe that's the only thing the initial install choking on the examples module missed.

Putting this here for anyone else searching for this error:

The website encountered an unexpected error. Try again later.

Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException: The "node" entity type did not specify a "fmm_application_forms" form class. in Drupal\Core\Entity\EntityTypeManager->getFormObject() (line 212 of core/lib/Drupal/Core/Entity/EntityTypeManager.php).

Drupal\form_mode_manager\AbstractEntityFormModesFactory->getForm(Object, 'fmm_application_forms') (Line: 202)
Drupal\form_mode_manager\AbstractEntityFormModesFactory->entityAdd(Object) (Line: 206)
Drupal\form_mode_manager\Controller\FormModeManagerEntityController->getEntityControllerResponse('entityAdd', Object) (Line: 163)
Drupal\form_mode_manager\Controller\FormModeManagerEntityController->entityAdd(Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 638)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 121)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 181)
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: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
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: 741)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)