Symfony\Component\Routing\Exception\RouteNotFoundException: in Drupal\Core\Routing\NullGenerator->getRoute() (line 42 of /var/www/html/web/core/lib/Drupal/Core/Routing/NullGenerator.php).
Drupal\Core\Routing\NullGenerator->getRoute() (Line: 276) Drupal\Core\Routing\UrlGenerator->generateFromRoute() (Line: 765) Drupal\Core\Url->toString() (Line: 183) Drupal\Core\Utility\LinkGenerator->generate() (Line: 164) Drupal\Core\Link->toString() (Line: 118) youtubechannelvideo() (Line: 127) youtubechannel_theme() (Line: 479) Drupal\Core\Theme\Registry->processExtension() (Line: 372) Drupal\Core\Theme\Registry->Drupal\Core\Theme\{closure}() (Line: 388) Drupal\Core\Extension\ModuleHandler->invokeAllWith() (Line: 373) Drupal\Core\Theme\Registry->build() (Line: 255) Drupal\Core\Theme\Registry->get() (Line: 88) Drupal\Core\Utility\ThemeRegistry->initializeRegistry() (Line: 69) Drupal\Core\Utility\ThemeRegistry->__construct() (Line: 291) Drupal\Core\Theme\Registry->getRuntime() (Line: 141) Drupal\Core\Theme\ThemeManager->render() (Line: 480) Drupal\Core\Render\Renderer->doRender() (Line: 240) Drupal\Core\Render\Renderer->render() (Line: 153) Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 627) Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 154) Drupal\Core\Render\Renderer->renderRoot() (Line: 66) Drupal\Core\Render\BareHtmlPageRenderer->renderBarePage() (Line: 76) Drupal\Core\ProxyClass\Render\BareHtmlPageRenderer->renderBarePage() (Line: 1074) install_display_output() (Line: 163) install_drupal() (Line: 48)
Symfony\Component\Routing\Exception\RouteNotFoundException: in Drupal\Core\Routing\NullGenerator->getRoute() (line 42 of /var/www/html/web/core/lib/Drupal/Core/Routing/NullGenerator.php).
Drupal\Core\Routing\NullGenerator->getRoute() (Line: 276) Drupal\Core\Routing\UrlGenerator->generateFromRoute() (Line: 765) Drupal\Core\Url->toString() (Line: 183) Drupal\Core\Utility\LinkGenerator->generate() (Line: 164) Drupal\Core\Link->toString() (Line: 118) youtubechannelvideo() (Line: 127) youtubechannel_theme() (Line: 479) Drupal\Core\Theme\Registry->processExtension() (Line: 372) Drupal\Core\Theme\Registry->Drupal\Core\Theme\{closure}() (Line: 388) Drupal\Core\Extension\ModuleHandler->invokeAllWith() (Line: 373) Drupal\Core\Theme\Registry->build() (Line: 255) Drupal\Core\Theme\Registry->get() (Line: 88) Drupal\Core\Utility\ThemeRegistry->initializeRegistry() (Line: 69) Drupal\Core\Utility\ThemeRegistry->__construct() (Line: 291) Drupal\Core\Theme\Registry->getRuntime() (Line: 141) Drupal\Core\Theme\ThemeManager->render() (Line: 480) Drupal\Core\Render\Renderer->doRender() (Line: 240) Drupal\Core\Render\Renderer->render() (Line: 153) Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 627) Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 154) Drupal\Core\Render\Renderer->renderRoot() (Line: 66) Drupal\Core\Render\BareHtmlPageRenderer->renderBarePage() (Line: 76) Drupal\Core\ProxyClass\Render\BareHtmlPageRenderer->renderBarePage() (Line: 1074) install_display_output() (Line: 271) _drupal_log_error() (Line: 182) _drupal_exception_handler()