fatal error 'Route "devel.admin_settings" does not exist.' after uninstalling devel module

The website encountered an unexpected error. Please try again later. Symfony\Component\Routing\Exception\RouteNotFoundException: Route "devel.admin_settings" does not exist. in Drupal\Core\Routing\RouteProvider->getRouteByName() (line 206 of core/lib/Drupal/Core/Routing/RouteProvider.php). Drupal\Core\Routing\UrlGenerator->getRoute() (Line: 270) Drupal\Core\Routing\UrlGenerator->generateFromRoute() (Line: 105) Drupal\Core\Render\MetadataBubblingUrlGenerator->generateFromRoute() (Line: 763) Drupal\Core\Url->toString() (Line: 182) Drupal\Core\Utility\LinkGenerator->generate() (Line: 95) Drupal\Core\Render\Element\Link::preRenderLink() call_user_func_array() (Line: 101) Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 772) Drupal\Core\Render\Renderer->doCallback() (Line: 363) Drupal\Core\Render\Renderer->doRender() (Line: 435) Drupal\Core\Render\Renderer->doRender() (Line: 201) Drupal\Core\Render\Renderer->render() (Line: 94) template_preprocess_toolbar() (Line: 287) Drupal\Core\Theme\ThemeManager->render() (Line: 422) Drupal\Core\Render\Renderer->doRender() (Line: 435) Drupal\Core\Render\Renderer->doRender() (Line: 201) Drupal\Core\Render\Renderer->render() (Line: 479) Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 82) __TwigTemplate_5cc059d4875e7c1c4bbe5ebb9e81986c6a3db78b374675bf096f42e1badd3952->doDisplay() (Line: 405) Twig\Template->displayWithErrorHandling() (Line: 378) Twig\Template->display() (Line: 390) Twig\Template->render() (Line: 55) twig_render_template() (Line: 384) Drupal\Core\Theme\ThemeManager->render() (Line: 422) Drupal\Core\Render\Renderer->doRender() (Line: 201) Drupal\Core\Render\Renderer->render() (Line: 162) Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 564) Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 163) Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90) Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray() call_user_func() (Line: 142) Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 163) Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 80) Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 58) Drupal\Core\StackMiddleware\Session->handle() (Line: 48) Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 106) Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 85) Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48) Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51) Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 23) Stack\StackedHttpKernel->handle() (Line: 708) Drupal\Core\DrupalKernel->handle() (Line: 19)

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Comment over 1 year ago →
🇬🇧United Kingdom aaron.ferris
I've just come across this whilst disabling devel 4.2.1 on a D9.5 site. Not entirely sure what fixed this per se, but disabling and re-enabling the admin_toolbar module removed it (or possibly updb?)

1. Disabled devel and admin_toolbar in an update hook
2. Re-enabled admin_toolbar in a separate update hook
3. Drush updb

Issue = gone. Just adding here in case others come across similar.
Comment 11 days ago →
🇺🇸United States montag64
I am still able to reproduce using @aaron.ferris' approach. The issue disappears until I re-enable admin_toolbar_search, then it comes back. I think this is why disabling and reenabling admin_toolbar works, because it disables admin_toolbar_search as well.

Seems to be related to admin_toolbar_search/admin_toolbar_tools.

Running Drupal 10.2.7 and Devel 5.0 w/ Admin Toolbar 3.4.2.