>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #2855064. --> Reported by: [petr illek](https://www.drupal.org/user/420365) >>> <p>Hi,<br> I'm trying to setup this module on a site running on Acquia Cloud.<br> Installation runs OK.<br> On the settings page I enter the results from realfavicongenerator.net and upload a zip with generated favicons. Settings and favicons are saved OK.</p> <pre>&lt;link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png"&gt;<br>&lt;link rel="icon" type="image/png" href="/favicon-32x32.png" sizes="32x32"&gt;<br>&lt;link rel="icon" type="image/png" href="/favicon-16x16.png" sizes="16x16"&gt;<br>&lt;link rel="manifest" href="/manifest.json"&gt;<br>&lt;link rel="mask-icon" href="/safari-pinned-tab.svg" color="#c73608"&gt;<br>&lt;meta name="theme-color" content="#ffffff"&gt;</pre><p>In the markup of a page I can see only:</p> <pre>&lt;meta name="theme-color" content="#ffffff"&gt;<br>&lt;meta name="favicon-generator" content="Drupal responsive_favicons + realfavicongenerator.net"&gt;</pre><p>Not the actual favicons. :(<br> If I try visit /admin/reports/status I got HTTP ERROR 500.</p> <p>In recent logs I can see this error message:</p> <pre>Warning: implode(): Invalid arguments passed in responsive_favicons_requirements() (line 19 of /mnt/www/html/sitefolder/docroot/modules/contrib/responsive_favicons/responsive_favicons.install) #0 /mnt/www/html/sitefolder/docroot/core/includes/bootstrap.inc(548): _drupal_error_handler_real(2, 'implode(): Inva...', '/mnt/www/html/m...', 19, Array) #1 [internal function]: _drupal_error_handler(2, 'implode(): Inva...', '/mnt/www/html/m...', 19, Array) #2 /mnt/www/html/sitefolder/docroot/modules/contrib/responsive_favicons/responsive_favicons.install(19): implode('&lt;br/&gt;', NULL) #3 [internal function]: responsive_favicons_requirements('runtime') #4 /mnt/www/html/sitefolder/docroot/core/lib/Drupal/Core/Extension/ModuleHandler.php(402): call_user_func_array('responsive_favi...', Array) #5 /mnt/www/html/sitefolder/docroot/core/modules/system/src/SystemManager.php(112): Drupal\Core\Extension\ModuleHandler-&gt;invokeAll('requirements', Array) #6 /mnt/www/html/sitefolder/docroot/core/modules/system/src/Controller/SystemInfoController.php(49): Drupal\system\SystemManager-&gt;listRequirements() #7 [internal function]: Drupal\system\Controller\SystemInfoController-&gt;status() #8 /mnt/www/html/sitefolder/docroot/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(123): call_user_func_array(Array, Array) #9 /mnt/www/html/sitefolder/docroot/core/lib/Drupal/Core/Render/Renderer.php(574): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber-&gt;Drupal\Core\EventSubscriber\{closure}() #10 /mnt/www/html/sitefolder/docroot/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(124): Drupal\Core\Render\Renderer-&gt;executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure)) #11 /mnt/www/html/sitefolder/docroot/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(97): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber-&gt;wrapControllerExecutionInRenderContext(Array, Array) #12 [internal function]: Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber-&gt;Drupal\Core\EventSubscriber\{closure}() #13 /mnt/www/html/sitefolder/docroot/vendor/symfony/http-kernel/HttpKernel.php(139): call_user_func_array(Object(Closure), Array) #14 /mnt/www/html/sitefolder/docroot/vendor/symfony/http-kernel/HttpKernel.php(62): Symfony\Component\HttpKernel\HttpKernel-&gt;handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1) #15 /mnt/www/html/sitefolder/docroot/core/lib/Drupal/Core/StackMiddleware/Session.php(57): Symfony\Component\HttpKernel\HttpKernel-&gt;handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #16 /mnt/www/html/sitefolder/docroot/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(47): Drupal\Core\StackMiddleware\Session-&gt;handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #17 /mnt/www/html/sitefolder/docroot/core/modules/page_cache/src/StackMiddleware/PageCache.php(99): Drupal\Core\StackMiddleware\KernelPreHandle-&gt;handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #18 /mnt/www/html/sitefolder/docroot/core/modules/page_cache/src/StackMiddleware/PageCache.php(78): Drupal\page_cache\StackMiddleware\PageCache-&gt;pass(Object(Symfony\Component\HttpFoundation\Request), 1, true) #19 /mnt/www/html/sitefolder/docroot/modules/contrib/shield/src/ShieldMiddleware.php(75): Drupal\page_cache\StackMiddleware\PageCache-&gt;handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #20 /mnt/www/html/sitefolder/docroot/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(47): Drupal\shield\ShieldMiddleware-&gt;handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #21 /mnt/www/html/sitefolder/docroot/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(50): Drupal\Core\StackMiddleware\ReverseProxyMiddleware-&gt;handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #22 /mnt/www/html/sitefolder/docroot/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware-&gt;handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #23 /mnt/www/html/sitefolder/docroot/core/lib/Drupal/Core/DrupalKernel.php(652): Stack\StackedHttpKernel-&gt;handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #24 /mnt/www/html/sitefolder/docroot/index.php(19): Drupal\Core\DrupalKernel-&gt;handle(Object(Symfony\Component\HttpFoundation\Request)) #25 {main}.</pre><p>On local it works ok.</p> <p>I haven't changed the .htaccess and settings.php as these changes are optional.</p> <p>If you need some more information I will try to get them to you.</p> <p>Thank you for your work and help. :)</p>