Cannot open module's configuration page.
composer require 'drupal/custom_breadcrumbs:^1.1'drush en custom_breadcrumbs/admin/config/user-interface/custom-breadcrumbsExpected behaviour: the configuration page of this module is opened.
Actual behaviour: an internal error occurs.
More details:
The website encountered an unexpected error. Please try again later.
InvalidArgumentException: Class "\Drupal\custom_breadcrumbs\Form\CustomBreadcrumbsSettingsForm" does not exist. in Drupal\Core\DependencyInjection\ClassResolver->getInstanceFromDefinition() (line 24 of core/lib/Drupal/Core/DependencyInjection/ClassResolver.php).
Drupal\Core\Controller\HtmlFormController->getFormObject(Object, '\Drupal\custom_breadcrumbs\Form\CustomBreadcrumbsSettingsForm') (Line: 58)
Drupal\Core\Controller\FormController->getContentResult(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 592)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 124)
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: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->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: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)Closed: works as designed
1.1
User interface
Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.
You are completely right: I simply skipped to rebuild the cache.
Apologies for this silly mistake from my side.
There is no bug. Issue can be closed.