I don't know if this is the correct forum for this but I have following error message popping up from time tot time:
Warning: Undefined array key "url" in Drupal\Core\Asset\JsCollectionOptimizerLazy->optimizeGroup() (regel 170 van /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/Asset/JsCollectionOptimizerLazy.php)
#0 /data/sites/web/modelspoorhobbybe/www/core/includes/bootstrap.inc(164): _drupal_error_handler_real(2, '...', '...', 170)
#1 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/Asset/JsCollectionOptimizerLazy.php(170): _drupal_error_handler(2, '...', '...', 170)
#2 /data/sites/web/modelspoorhobbybe/www/core/modules/system/src/Controller/AssetControllerBase.php(183): Drupal\Core\Asset\JsCollectionOptimizerLazy->optimizeGroup(Array)
#3 [internal function]: Drupal\system\Controller\AssetControllerBase->deliver(Object(Symfony\Component\HttpFoundation\Request), '...')
#4 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(123): call_user_func_array(Array, Array)
#5 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/Render/Renderer.php(627): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}()
#6 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(121): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure))
#7 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(97): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array)
#8 /data/sites/web/modelspoorhobbybe/www/vendor/symfony/http-kernel/HttpKernel.php(181): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}()
#9 /data/sites/web/modelspoorhobbybe/www/vendor/symfony/http-kernel/HttpKernel.php(76): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1)
#10 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/StackMiddleware/Session.php(58): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#11 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#12 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/StackMiddleware/ContentLength.php(28): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#13 /data/sites/web/modelspoorhobbybe/www/core/modules/big_pipe/src/StackMiddleware/ContentLength.php(32): Drupal\Core\StackMiddleware\ContentLength->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#14 /data/sites/web/modelspoorhobbybe/www/core/modules/page_cache/src/StackMiddleware/PageCache.php(106): Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#15 /data/sites/web/modelspoorhobbybe/www/core/modules/page_cache/src/StackMiddleware/PageCache.php(85): Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#16 /data/sites/web/modelspoorhobbybe/www/modules/contrib/advban/src/AdvbanMiddleware.php(57): Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#17 /data/sites/web/modelspoorhobbybe/www/core/modules/ban/src/BanMiddleware.php(50): Drupal\advban\AdvbanMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#18 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(48): Drupal\ban\BanMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#19 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#20 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/StackMiddleware/AjaxPageState.php(36): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#21 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/StackMiddleware/StackedHttpKernel.php(51): Drupal\Core\StackMiddleware\AjaxPageState->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#22 /data/sites/web/modelspoorhobbybe/www/core/lib/Drupal/Core/DrupalKernel.php(704): Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#23 /data/sites/web/modelspoorhobbybe/www/index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request))
#24 {main}
.
I can not figure out which module is responsible so I hope one of you guys can point me in th eright direction based on the error-log.
Thanks