Warning: Invalid argument supplied for foreach() in Drupal\system\Element\StatusReportPage::preRenderGeneralInfo() on status page

The problem here is that for some reason the section of system_requirements() that sets that cron key has not set #description to be an array.

Confirmed. Getting this on Drupal core 8.3.2

I can confirm the same error initially with 8.3.2, and persists after upgrading core to 8.3.3 and 8.3.4. Everything else on the site appears in order and functioning properly. Any ideas to try to resolve?

here u go:
https://www.drupal.org/node/2899396#comment-12199012

The patch does not seem to work for me. Can you describe what you are doing with the patch?

Just wanted to chime in here. I get the
"Warning: Invalid argument supplied for foreach() in Drupal\system\Element\StatusReportPage::preRenderGeneralInfo() (line 42 of core/modules/system/src/Element/StatusReportPage.php)."
message on /admin/reports/status and I'm in Drupal Version 8.3.7
HOWEVER, I get it in my https version of my site not my http version. The main difference is the https site has Ubercart installed. The rest of the modules are close to identical. Would more info from me help anybody diagnose it? I'm a newbie here so don't know what is relevant.

One of the reason would be that some of your modules are defining the requirements without a specific key(e.g: $requirements[] = [...]; ).
By specifying a key the error will be gone (e.g: $requirements['mymodule_compoonent'] = [...]; )

Hello,

I attempted this patch on my Drupal 8.4.0 version since this issue has reappeared. However, I completely got a broken StatusReportPage.

Please take a look at this error message that I am receiving after updating to Drupal 8.4 from Drupal 8.3.7 and applying the patch to my error listed as Warning below..

The website encountered an unexpected error. Please try again later.
ParseError: syntax error, unexpected '}' in Composer\Autoload\includeFile() (line 57 of core/modules/system/src/Element/StatusReportPage.php).

I reverted the file to its previous version before this patch attempt, however on my report status I still receive this Warning message and am unable to update my Drupal database.

Warning: Invalid argument supplied for foreach() in Drupal\system\Element\StatusReportPage::preRenderGeneralInfo() (line 42 of core/modules/system/src/Element/StatusReportPage.php).
Drupal\system\Element\StatusReportPage::preRenderGeneralInfo(Array)
call_user_func(Array, Array) (Line: 378)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 195)
Drupal\Core\Render\Renderer->render(Array, ) (Line: 226)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 576)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 227)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 117)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object) (Line: 108)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.view', Object) (Line: 158)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 68)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 99)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 78)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 50)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 657)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

Thanks to hugronaphor's comment #12, I found two places in the Ubercart module installed on my site that had used "$requirements[]" without a key. I added a key and the errors went away.

I'm running Drupal Version 8.5.3 and Ubercart 8.x-4.0-alpha5.

Problem code:

/modules/contrib/ubercart/uc_store/src/Controller/StoreController.php:
   22        ];
   23        foreach ($results as $message) {
   24:         $requirements[] = [
   25            'title' => $message['title'],
   26            'description' => $message['desc'],

/modules/contrib/ubercart/uc_store/uc_store.install:
   20      $results = \Drupal::moduleHandler()->invokeAll('uc_store_status');
   21      foreach ($results as $status) {
   22:       $requirements[] = array(
   23          'severity' => isset($severities[$status['status']]) ? $severities[$status['status']] : NULL,
   24          'title' => $status['title'],

Fixed code:

/modules/contrib/ubercart/uc_store/src/Controller/StoreController.php:
   22        ];
   23        foreach ($results as $message) {
   24:         $requirements['uc_message'] = [
   25            'title' => $message['title'],
   26            'description' => $message['desc'],

/modules/contrib/ubercart/uc_store/uc_store.install:
   20      $results = \Drupal::moduleHandler()->invokeAll('uc_store_status');
   21      foreach ($results as $status) {
   22:       $requirements['uc_message'] = array(
   23          'severity' => isset($severities[$status['status']]) ? $severities[$status['status']] : NULL,
   24          'title' => $status['title'],

I think this is related, I need to add an empty description key in uc_store_requirements to make error message on status page go away:

function uc_store_requirements($phase) {
  $requirements = [];

  if ($phase == 'runtime') {
    $severities = [
      'warning' => REQUIREMENT_WARNING,
      'error' => REQUIREMENT_ERROR,
    ];

    $results = \Drupal::moduleHandler()->invokeAll('uc_store_status');
    foreach ($results as $status) {
      $requirements[] = [
        'severity' => isset($severities[$status['status']]) ? $severities[$status['status']] : NULL,
        'title' => $status['title'],
        'value' => $status['desc'],
        'description' => [],
      ];
    }
  }

  return $requirements;
}

#17 works!

Hello Everyone.

Bjorn, great work - but just a little light on context and details, IMHO...

For those of us who are not Drupal Core Team, Engineers or even Developers, I have written a more extensive article about this fix on my website - along with dozens of other D6, D7 and D8 fixes - in vernacular I believe is more in tune with the needs and communication requirements of regular people.

Here you go: https://bit.ly/2XNvvAV

Graham Leach

Warning: Invalid argument supplied for foreach() in content_moderation_requirements() (line 23 of /home/u753365889/public_html/core/modules/content_moderation/content_moderation.install)

#0 /home/u753365889/public_html/core/includes/bootstrap.inc(600): _drupal_error_handler_real(2, 'Invalid argumen...', '/home/u75336588...', 23, Array)
#1 /home/u753365889/public_html/core/modules/content_moderation/content_moderation.install(23): _drupal_error_handler(2, 'Invalid argumen...', '/home/u75336588...', 23, Array)
#2 [internal function]: content_moderation_requirements('runtime')
#3 /home/u753365889/public_html/core/lib/Drupal/Core/Extension/ModuleHandler.php(403): call_user_func_array('content_moderat...', Array)
#4 /home/u753365889/public_html/core/modules/system/src/SystemManager.php(111): Drupal\Core\Extension\ModuleHandler->invokeAll('requirements', Array)
#5 /home/u753365889/public_html/core/modules/system/src/Controller/SystemInfoController.php(49): Drupal\system\SystemManager->listRequirements()
#6 [internal function]: Drupal\system\Controller\SystemInfoController->status()
#7 /home/u753365889/public_html/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(123): call_user_func_array(Array, Array)
#8 /home/u753365889/public_html/core/lib/Drupal/Core/Render/Renderer.php(573): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}()
#9 /home/u753365889/public_html/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(124): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure))
#10 /home/u753365889/public_html/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(97): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array)
#11 /home/u753365889/public_html/vendor/symfony/http-kernel/HttpKernel.php(151): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}()
#12 /home/u753365889/public_html/vendor/symfony/http-kernel/HttpKernel.php(68): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1)
#13 /home/u753365889/public_html/core/lib/Drupal/Core/StackMiddleware/Session.php(57): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#14 /home/u753365889/public_html/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(47): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#15 /home/u753365889/public_html/core/modules/page_cache/src/StackMiddleware/PageCache.php(106): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#16 /home/u753365889/public_html/core/modules/page_cache/src/StackMiddleware/PageCache.php(85): Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#17 /home/u753365889/public_html/core/modules/ban/src/BanMiddleware.php(50): Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#18 /home/u753365889/public_html/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(47): Drupal\ban\BanMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#19 /home/u753365889/public_html/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(52): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#20 /home/u753365889/public_html/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#21 /home/u753365889/public_html/core/lib/Drupal/Core/DrupalKernel.php(708): Stack\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#22 /home/u753365889/public_html/index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request))
#23 {main}

I'm going to close this since numerous comments indicate this was an issue with custom or contrib module code. Comments #12, #16, #17 and #19 contain useful tips for how to fix it.