a:6:{s:5:"%type";s:6:"Notice";s:8:"@message";O:25:"Drupal\Core\Render\Markup":1:{s:9:"*string";s:24:"Undefined index: #prefix";}s:9:"%function";s:53:"Drupal\file\Element\ManagedFile::uploadAjaxCallback()";s:5:"%file";s:63:"/var/www/goodpush/core/modules/file/src/Element/ManagedFile.php";s:5:"%line";i:201;s:17:"@backtrace_string";s:2144:"#0 /var/www/goodpush/core/includes/bootstrap.inc(600): _drupal_error_handler_real()
#1 /var/www/goodpush/core/modules/file/src/Element/ManagedFile.php(201): _drupal_error_handler()
#2 [internal function]: Drupal\file\Element\ManagedFile::uploadAjaxCallback()
#3 /var/www/goodpush/core/lib/Drupal/Core/Form/FormAjaxResponseBuilder.php(69): call_user_func_array()
#4 /var/www/goodpush/core/lib/Drupal/Core/Form/EventSubscriber/FormAjaxSubscriber.php(109): Drupal\Core\Form\FormAjaxResponseBuilder->buildResponse()
#5 [internal function]: Drupal\Core\Form\EventSubscriber\FormAjaxSubscriber->onException()
#6 /var/www/goodpush/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(111): call_user_func()
#7 /var/www/goodpush/vendor/symfony/http-kernel/HttpKernel.php(227): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch()
#8 /var/www/goodpush/vendor/symfony/http-kernel/HttpKernel.php(79): Symfony\Component\HttpKernel\HttpKernel->handleException()
#9 /var/www/goodpush/core/lib/Drupal/Core/StackMiddleware/Session.php(57): Symfony\Component\HttpKernel\HttpKernel->handle()
#10 /var/www/goodpush/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(47): Drupal\Core\StackMiddleware\Session->handle()
#11 /var/www/goodpush/core/modules/page_cache/src/StackMiddleware/PageCache.php(106): Drupal\Core\StackMiddleware\KernelPreHandle->handle()
#12 /var/www/goodpush/core/modules/page_cache/src/StackMiddleware/PageCache.php(85): Drupal\page_cache\StackMiddleware\PageCache->pass()
#13 /var/www/goodpush/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(47): Drupal\page_cache\StackMiddleware\PageCache->handle()
#14 /var/www/goodpush/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(52): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle()
#15 /var/www/goodpush/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle()
#16 /var/www/goodpush/core/lib/Drupal/Core/DrupalKernel.php(708): Stack\StackedHttpKernel->handle()
#17 /var/www/goodpush/index.php(19): Drupal\Core\DrupalKernel->handle()
#18 {main}";}