Admin Page `admin/config/services/jsonapi` is not loading in test environment

Am getting the same on the JSONAPI route, and a similar but slightly different error on REST endpoint settings.
e.g. admin/config/services/rest/resource/rest_menu_item/edit
gives
> Error: Cannot use object of type Drupal\Core\StringTranslation\TranslatableMarkup as array in Drupal\config_readonly\EventSubscriber\ReadOnlyFormSubscriber->getConfigTargetNames() (line 166 of modules/contrib/config_readonly/src/EventSubscriber/ReadOnlyFormSubscriber.php).

I'm getting the exact same error on the admin page admin/reports/updates/settings.

Same here too. I'm not sure whether that string should be empty or not, but at least the MR prevents the hard error.
Please review.

Given more info about the backtrace in case it's useful:

https://mysite.ddev/admin/config/services/jsonapi

Message	TypeError: strstr(): Argument #1 ($haystack) must be of type string, Drupal\Core\Form\ConfigTarget given in strstr() (line 167 of /app/web/modules/contrib/config_readonly/src/EventSubscriber/ReadOnlyFormSubscriber.php).

Severity	Error

Backtrace	
#0 /app/web/modules/contrib/config_readonly/src/EventSubscriber/ReadOnlyFormSubscriber.php(167): strstr()
#1 /app/web/modules/contrib/config_readonly/src/EventSubscriber/ReadOnlyFormSubscriber.php(82): Drupal\config_readonly\EventSubscriber\ReadOnlyFormSubscriber->getConfigTargetNames()
#2 [internal function]: Drupal\config_readonly\EventSubscriber\ReadOnlyFormSubscriber->onFormAlter()
#3 /app/web/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(111): call_user_func()
#4 /app/web/modules/contrib/config_readonly/config_readonly.module(21): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch()
#5 /app/web/core/lib/Drupal/Core/Extension/ModuleHandler.php(552): config_readonly_form_alter()
#6 /app/web/core/lib/Drupal/Core/Form/FormBuilder.php(834): Drupal\Core\Extension\ModuleHandler->alter()
...

daniel.pernold → made their first commit to this issue’s fork.

I have committed a patch that checks if the array key `#config_target` is of type `ConfigTarget` and if so, extracts the name from it. I think this is the proper approach since the buttons of the discussed forms then gets correctly disabled.

I have tested MR 17. Now page accessible.
I move it to RTBC.
THANKS!!

+1 RTBC. Patch resolves error on /admin/config/services/jsonapi page.

Another issue has cropped up with the same source, this time with the RestUI module. I'm using this ticket to fix it here.

Error: Cannot use object of type Drupal\Core\StringTranslation\TranslatableMarkup as array in Drupal\config_readonly\EventSubscriber\ReadOnlyFormSubscriber->getConfigTargetNames() (line 167 of modules/contrib/config_readonly/src/EventSubscriber/ReadOnlyFormSubscriber.php).

Drupal\config_readonly\EventSubscriber\ReadOnlyFormSubscriber->onFormAlter(Object, 'config_readonly_form_event', Object)
call_user_func(Array, Object, 'config_readonly_form_event', Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'config_readonly_form_event') (Line: 21)
config_readonly_form_alter(Array, Object, 'restui') (Line: 552)
Drupal\Core\Extension\ModuleHandler->alter('form', Array, Object, 'restui') (Line: 834)
Drupal\Core\Form\FormBuilder->prepareForm('restui', Array, Object) (Line: 285)
Drupal\Core\Form\FormBuilder->buildForm(Object, Object) (Line: 73)
Drupal\Core\Controller\FormController->getContentResult(Object, 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)

Patch in this issue fork:

https://git.drupalcode.org/issue/config_readonly-3469854/-/commit/12ac22...