After upgrading a D9 site to D10, the front page (w/ Gutenberg experience) is not editable. and the console shows a 500 error loading editor/content_block_types/load/webpage. I'm using Twig_tweak.
Clicking on the URL in Console shows the results:
The website encountered an unexpected error. Please try again later.<br><br><em class="placeholder">TypeError</em>: array_keys(): Argument #1 ($array) must be of type array, null given in <em class="placeholder">array_keys()</em> (line <em class="placeholder">213</em> of <em class="placeholder">modules/contrib/gutenberg/src/Controller/BlocksController.php</em>). <pre class="backtrace">Drupal\gutenberg\Controller\BlocksController->loadContentBlockTypes()
call_user_func_array() (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 592)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 181)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 58)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 142)
Drupal\cloudflare\CloudFlareMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 704)
Drupal\Core\DrupalKernel->handle() (Line: 19)
</pre>Needs review
3.0
Code
Pretty sure you are experiencing the same bug as discovered in https://www.drupal.org/project/gutenberg/issues/3405131#comment-15365569 📌 Sync 3.x with 2.x Needs review
I think it makes sense to release a new beta containing the fix ✌️ https://www.drupal.org/project/gutenberg/releases/3.0.0-beta5 →
Please test and report back if that fixes your problem 🤓✌️