Error: Route "devel.toolbar.settings_form" does not exist - after updating devel to 8.2
Issue #3049854 on drupal.org by kirantej_p.
After updating devel to 8.2 using Composer, facing the following error. Even though, the route "devel.toolbar.settings_form" exists and its defined, but it is throwing me following error.
a:6:{s:5:"%type";s:58:"Symfony\Component\Routing\Exception\RouteNotFoundException";s:8:"@message";s:51:"Route "devel.toolbar.settings_form" does not exist.";s:9:"%function";s:51:"Drupal\Core\Routing\RouteProvider->getRouteByName()";s:5:"%file";s:80:"/opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Routing/RouteProvider.php";s:5:"%line";i:201;s:17:"@backtrace_string";s:7284:"#0 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Routing/UrlGenerator.php(426): Drupal\Core\Routing\RouteProvider->getRouteByName('devel.toolbar.s...')
#1 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Routing/UrlGenerator.php(271): Drupal\Core\Routing\UrlGenerator->getRoute('devel.toolbar.s...')
#2 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/MetadataBubblingUrlGenerator.php(105): Drupal\Core\Routing\UrlGenerator->generateFromRoute('devel.toolbar.s...', Array, Array, true)
#3 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Url.php(753): Drupal\Core\Render\MetadataBubblingUrlGenerator->generateFromRoute('devel.toolbar.s...', Array, Array, true)
#4 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Utility/LinkGenerator.php(167): Drupal\Core\Url->toString(true)
#5 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/Element/Link.php(94): Drupal\Core\Utility\LinkGenerator->generate(Object(Drupal\Core\StringTranslation\TranslatableMarkup), Object(Drupal\Core\Url))
#6 [internal function]: Drupal\Core\Render\Element\Link::preRenderLink(Array)
#7 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/Renderer.php(378): call_user_func(Array, Array)
#8 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/Renderer.php(450): Drupal\Core\Render\Renderer->doRender(Array)
#9 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/Renderer.php(450): Drupal\Core\Render\Renderer->doRender(Array)
#10 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/Renderer.php(195): Drupal\Core\Render\Renderer->doRender(Array, false)
#11 /opt/lampp/htdocs/testtest/core/modules/toolbar/toolbar.module(93): Drupal\Core\Render\Renderer->render(Array)
#12 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Theme/ThemeManager.php(287): template_preprocess_toolbar(Array, 'toolbar', Array)
#13 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/Renderer.php(437): Drupal\Core\Theme\ThemeManager->render('toolbar', Array)
#14 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/Renderer.php(450): Drupal\Core\Render\Renderer->doRender(Array)
#15 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/Renderer.php(195): Drupal\Core\Render\Renderer->doRender(Array, false)
#16 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Template/TwigExtension.php(490): Drupal\Core\Render\Renderer->render(Array)
#17 /opt/lampp/htdocs/testtest/sites/default/files/php/twig/5cbd4f7c7ec26_html.html.twig_Mh_bkiAWslmGeD2fVSm63xpRP/0X6AoQa073kAhVhhscuejmSVzr_SWHQkk3xZznr0AP0.php(98): Drupal\Core\Template\TwigExtension->escapeFilter(Object(Drupal\Core\Template\TwigEnvironment), Array, 'html', NULL, true)
#18 /opt/lampp/htdocs/testtest/vendor/twig/twig/src/Template.php(430): __TwigTemplate_1211c86cb25eee9f7222593c8e4f58b537ff9be79773fbe5938f1e0224f30dc5->doDisplay(Array, Array)
#19 /opt/lampp/htdocs/testtest/vendor/twig/twig/src/Template.php(401): Twig\Template->displayWithErrorHandling(Array, Array)
#20 /opt/lampp/htdocs/testtest/vendor/twig/twig/src/Template.php(409): Twig\Template->display(Array)
#21 /opt/lampp/htdocs/testtest/core/themes/engines/twig/twig.engine(64): Twig\Template->render(Array)
#22 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Theme/ThemeManager.php(384): twig_render_template('core/themes/cla...', Array)
#23 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/Renderer.php(437): Drupal\Core\Theme\ThemeManager->render('html', Array)
#24 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/Renderer.php(195): Drupal\Core\Render\Renderer->doRender(Array, false)
#25 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(147): Drupal\Core\Render\Renderer->render(Array)
#26 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/Renderer.php(582): Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}()
#27 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(148): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure))
#28 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php(90): Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object(Symfony\Component\HttpFoundation\Request), Object(Drupal\Core\Routing\CurrentRouteMatch))
#29 [internal function]: Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object(Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher))
#30 /opt/lampp/htdocs/testtest/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(111): call_user_func(Array, Object(Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher))
#31 /opt/lampp/htdocs/testtest/vendor/symfony/http-kernel/HttpKernel.php(156): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.view', Object(Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent))
#32 /opt/lampp/htdocs/testtest/vendor/symfony/http-kernel/HttpKernel.php(68): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1)
#33 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/StackMiddleware/Session.php(57): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#34 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(47): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#35 /opt/lampp/htdocs/testtest/core/modules/page_cache/src/StackMiddleware/PageCache.php(99): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#36 /opt/lampp/htdocs/testtest/core/modules/page_cache/src/StackMiddleware/PageCache.php(78): Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#37 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(47): Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#38 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(52): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#39 /opt/lampp/htdocs/testtest/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#40 /opt/lampp/htdocs/testtest/core/lib/Drupal/Core/DrupalKernel.php(693): Stack\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#41 /opt/lampp/htdocs/testtest/index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request))
#42 {main}";}
This is a blocking error as after running update.php, couldn't access the site. Site gives me this error for any page.