Foutmelding bij inloggen

Hallo,
Als ik wil inloggen krijg ik de volgende melding te zien.
Hoe kan ik dit verhelpen want nu kan ik niet meer inloggen in mijn backend.

Er is onverwacht een fout opgetreden. Probeer het later nog eens.

Symfony\Component\Routing\Exception\RouteNotFoundException: Route "entity.moderation_state.collection" does not exist. in Drupal\Core\Routing\RouteProvider->getRouteByName() (line 187 of core/lib/Drupal/Core/Routing/RouteProvider.php).

Drupal\Core\Routing\UrlGenerator->getRoute('entity.moderation_state.collection') (Line: 121)
Drupal\Core\Routing\UrlGenerator->getPathFromRoute('entity.moderation_state.collection', Array) (Line: 68)
Drupal\Core\Render\MetadataBubblingUrlGenerator->getPathFromRoute('entity.moderation_state.collection', Array) (Line: 772)
Drupal\Core\Url->getInternalPath() (Line: 129)
Drupal\Core\Utility\LinkGenerator->generate('Moderation states', Object) (Line: 94)
Drupal\Core\Render\Element\Link::preRenderLink(Array)
call_user_func(Array, Array) (Line: 381)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 195)
Drupal\Core\Render\Renderer->render(Array) (Line: 468)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 105)
__TwigTemplate_9af9b04fa15c63d2db360fe411ae52771bc1ccf9631a21fa7abb34ec8e239264->getmenu_links(Array, Object, 3) (Line: 112)
__TwigTemplate_9af9b04fa15c63d2db360fe411ae52771bc1ccf9631a21fa7abb34ec8e239264->getmenu_links(Array, Object, 2) (Line: 112)
__TwigTemplate_9af9b04fa15c63d2db360fe411ae52771bc1ccf9631a21fa7abb34ec8e239264->getmenu_links(Array, Object, 1) (Line: 112)
__TwigTemplate_9af9b04fa15c63d2db360fe411ae52771bc1ccf9631a21fa7abb34ec8e239264->getmenu_links(Array, Object, 0) (Line: 48)
__TwigTemplate_9af9b04fa15c63d2db360fe411ae52771bc1ccf9631a21fa7abb34ec8e239264->doDisplay(Array, Array) (Line: 381)
Twig_Template->displayWithErrorHandling(Array, Array) (Line: 355)
Twig_Template->display(Array) (Line: 366)
Twig_Template->render(Array) (Line: 64)
twig_render_template('core/themes/stable/templates/navigation/menu--toolbar.html.twig', Array) (Line: 384)
Drupal\Core\Theme\ThemeManager->render('menu__toolbar__admin', Array) (Line: 435)
Drupal\Core\Render\Renderer->doRender(Array) (Line: 448)
Drupal\Core\Render\Renderer->doRender(Array) (Line: 448)
Drupal\Core\Render\Renderer->doRender(Array) (Line: 448)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 195)
Drupal\Core\Render\Renderer->render(Array) (Line: 93)
template_preprocess_toolbar(Array, 'toolbar', Array) (Line: 287)
Drupal\Core\Theme\ThemeManager->render('toolbar', Array) (Line: 435)
Drupal\Core\Render\Renderer->doRender(Array) (Line: 448)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 195)
Drupal\Core\Render\Renderer->render(Array) (Line: 468)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 106)
__TwigTemplate_c7de39c8d0db023efcee2096cbfa2c519ea2dfa64fd9f5862085cfd5422d368a->doDisplay(Array, Array) (Line: 381)
Twig_Template->displayWithErrorHandling(Array, Array) (Line: 355)
Twig_Template->display(Array) (Line: 366)
Twig_Template->render(Array) (Line: 64)
twig_render_template('themes/revoo/templates/html.html.twig', Array) (Line: 384)
Drupal\Core\Theme\ThemeManager->render('html', Array) (Line: 435)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 195)
Drupal\Core\Render\Renderer->render(Array) (Line: 147)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 574)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 148)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.view', Object) (Line: 144)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 62)
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: 98)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 77)
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: 628)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)