Additional uncaught exception thrown while handling exception.

Original

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)

Additional

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()