Some assets look empty on Edit Page but are still functionning

Can someone confirm this? We didn't run into this issue yet. Maybe a specific issue / conflict with other modules or ACE on your side? Any further ideas?

Can you please try to reproduce this on vanilla Drupal or simplytest.me?

Hello,
Thank you for your reply.

I am not familiar with simplytest.me
On my website, I have tried to launch a "composer update && drush updb -y" command... which threwed this error (which seems to reffer to Asset Injector at the beginning:

In ExceptionHandler.php line 56:

  SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT 1 AS "expression"
  FROM
  "key_value" "key_value"
  WHERE ("name" = :db_condition_placeholder_0) AND ("collection" = :db_condition_placeholder_1); Array
  (
      [:db_condition_placeholder_0] => asset.css_js_query_string
      [:db_condition_placeholder_1] => state
  )


In StatementWrapperIterator.php line 113:

  SQLSTATE[HY000]: General error: 2006 MySQL server has gone away

PHP Fatal error:  Uncaught PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away in /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Database/StatementWrapperIterator.php:113
Stack trace:
#0 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Database/StatementWrapperIterator.php(113): PDOStatement->execute()
#1 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Database/Connection.php(851): Drupal\Core\Database\StatementWrapperIterator->execute()
#2 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Database/Schema.php(178): Drupal\Core\Database\Connection->query()
#3 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Config/DatabaseStorage.php(117): Drupal\Core\Database\Schema->tableExists()
#4 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Config/CachedStorage.php(95): Drupal\Core\Config\DatabaseStorage->readMultiple()
#5 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Config/ConfigFactory.php(165): Drupal\Core\Config\CachedStorage->readMultiple()
#6 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Config/ConfigFactory.php(104): Drupal\Core\Config\ConfigFactory->doLoadMultiple()
#7 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Config/ConfigFactory.php(89): Drupal\Core\Config\ConfigFactory->doGet()
#8 /home/[my_user_id]/public_html/web/core/modules/automated_cron/src/EventSubscriber/AutomatedCron.php(50): Drupal\Core\Config\ConfigFactory->get()
#9 [internal function]: Drupal\automated_cron\EventSubscriber\AutomatedCron->__construct()
#10 /home/[my_user_id]/public_html/vendor/symfony/dependency-injection/ContainerBuilder.php(1140): ReflectionClass->newInstanceArgs()
#11 /home/[my_user_id]/public_html/vendor/symfony/dependency-injection/ContainerBuilder.php(586): Symfony\Component\DependencyInjection\ContainerBuilder->createService()
#12 /home/[my_user_id]/public_html/vendor/symfony/dependency-injection/ContainerBuilder.php(531): Symfony\Component\DependencyInjection\ContainerBuilder->doGet()
#13 /home/[my_user_id]/public_html/web/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(105): Symfony\Component\DependencyInjection\ContainerBuilder->get()
#14 /home/[my_user_id]/public_html/vendor/symfony/http-kernel/HttpKernel.php(115): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch()
#15 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/StackMiddleware/StackedHttpKernel.php(66): Symfony\Component\HttpKernel\HttpKernel->terminate()
#16 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/DrupalKernel.php(715): Drupal\Core\StackMiddleware\StackedHttpKernel->terminate()
#17 /home/[my_user_id]/public_html/vendor/drush/drush/src/Boot/DrupalBoot8.php(326): Drupal\Core\DrupalKernel->terminate()
#18 [internal function]: Drush\Boot\DrupalBoot8->terminate()
#19 {main}

Next Drupal\Core\Database\DatabaseExceptionWrapper: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT 1 FROM information_schema.tables WHERE ("table_schema" = :db_condition_placeholder_40) AND ("table_name" = :db_condition_placeholder_41); Array
(
    [:db_condition_placeholder_40] => [my_user_id]
    [:db_condition_placeholder_41] => config
)
 in /home/[my_user_id]/public_html/web/core/modules/mysql/src/Driver/Database/mysql/ExceptionHandler.php:56
Stack trace:
#0 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Database/Connection.php(883): Drupal\mysql\Driver\Database\mysql\ExceptionHandler->handleExecutionException()
#1 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Database/Schema.php(178): Drupal\Core\Database\Connection->query()
#2 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Config/DatabaseStorage.php(117): Drupal\Core\Database\Schema->tableExists()
#3 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Config/CachedStorage.php(95): Drupal\Core\Config\DatabaseStorage->readMultiple()
#4 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Config/ConfigFactory.php(165): Drupal\Core\Config\CachedStorage->readMultiple()
#5 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Config/ConfigFactory.php(104): Drupal\Core\Config\ConfigFactory->doLoadMultiple()
#6 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/Config/ConfigFactory.php(89): Drupal\Core\Config\ConfigFactory->doGet()
#7 /home/[my_user_id]/public_html/web/core/modules/automated_cron/src/EventSubscriber/AutomatedCron.php(50): Drupal\Core\Config\ConfigFactory->get()
#8 [internal function]: Drupal\automated_cron\EventSubscriber\AutomatedCron->__construct()
#9 /home/[my_user_id]/public_html/vendor/symfony/dependency-injection/ContainerBuilder.php(1140): ReflectionClass->newInstanceArgs()
#10 /home/[my_user_id]/public_html/vendor/symfony/dependency-injection/ContainerBuilder.php(586): Symfony\Component\DependencyInjection\ContainerBuilder->createService()
#11 /home/[my_user_id]/public_html/vendor/symfony/dependency-injection/ContainerBuilder.php(531): Symfony\Component\DependencyInjection\ContainerBuilder->doGet()
#12 /home/[my_user_id]/public_html/web/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(105): Symfony\Component\DependencyInjection\ContainerBuilder->get()
#13 /home/[my_user_id]/public_html/vendor/symfony/http-kernel/HttpKernel.php(115): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch()
#14 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/StackMiddleware/StackedHttpKernel.php(66): Symfony\Component\HttpKernel\HttpKernel->terminate()
#15 /home/[my_user_id]/public_html/web/core/lib/Drupal/Core/DrupalKernel.php(715): Drupal\Core\StackMiddleware\StackedHttpKernel->terminate()
#16 /home/[my_user_id]/public_html/vendor/drush/drush/src/Boot/DrupalBoot8.php(326): Drupal\Core\DrupalKernel->terminate()
#17 [internal function]: Drush\Boot\DrupalBoot8->terminate()
#18 {main}
  thrown in /home/[my_user_id]/public_html/web/core/modules/mysql/src/Driver/Database/mysql/ExceptionHandler.php on line 56

On my website, I am also having an error on screen :

Drupal\Component\Plugin\Exception\PluginNotFoundException: The "current_theme" plugin does not exist. Valid plugin IDs for Drupal\rules\Core\ConditionManager are: response_code, rules_data_comparison, rules_data_is_empty, rules_list_contains, rules_list_count_is, rules_entity_has_field, rules_entity_is_new, rules_entity_is_of_bundle, rules_entity_is_of_type, rules_node_is_of_type, rules_node_is_promoted, rules_node_is_published, rules_node_is_sticky, rules_path_alias_exists, rules_path_has_alias, rules_text_comparison, rules_entity_field_access, rules_user_has_role, rules_user_is_blocked, webform in Drupal\Core\Plugin\DefaultPluginManager->doGetDefinition() (line 53 of core/lib/Drupal/Component/Plugin/Discovery/DiscoveryTrait.php).

Drupal\Core\Plugin\DefaultPluginManager->getDefinition() (Line: 16)
Drupal\Core\Plugin\Factory\ContainerFactory->createInstance() (Line: 67)
Drupal\Core\Condition\ConditionManager->createInstance() (Line: 21)
Drupal\rules\Core\ConditionManager->createInstance() (Line: 81)
Drupal\Core\Plugin\DefaultLazyPluginCollection->initializePlugin() (Line: 80)
Drupal\Component\Plugin\LazyPluginCollection->get() (Line: 26)
Drupal\Core\Condition\ConditionPluginCollection->get() (Line: 149)
Drupal\Component\Plugin\LazyPluginCollection->getIterator() (Line: 88)
Drupal\asset_injector\AssetInjectorAccessControlHandler->checkAccess() (Line: 109)
Drupal\Core\Entity\EntityAccessControlHandler->access() (Line: 329)
Drupal\Core\Entity\EntityBase->access() (Line: 175)
asset_injector_get_assets() (Line: 142)
_asset_injector_add_element_libraries() (Line: 120)
asset_injector_page_attachments() (Line: 311)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 395)
Drupal\Core\Extension\ModuleHandler->invokeAllWith() (Line: 308)
Drupal\Core\Render\MainContent\HtmlRenderer->invokePageAttachmentHooks() (Line: 285)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 638)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 284)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare() (Line: 128)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
call_user_func() (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->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: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741)
Drupal\Core\DrupalKernel->handle() (Line: 19)

I hope this would help you to define wether it comes from the Asset Injector module, the interaction with an other module, or my config...

Best regards

hitting this on our instance as well. save, settings show on site, not in Edit on the css asset.

will probably rollback to .19 until this is addressed.

in our instance, it seemed to degrade more and more over time until it basically became non-functioning. flushing cache and running cron would work once or twice and then that didn't. fully deleting and recreating became the answer but it'd started to become every edit, we had to delete and recreate.

We still need ways to reproduce this or at least understand how this can happen. I still have no idea, sorry.