Symfony\Component\Routing\Exception\RouteNotFoundException: Route "<none>" does not exist. in Drupal\Core\Routing\RouteProvider->getRouteByName() (line 201 of /var/www/drupal_86/web/core/lib/Drupal/Core/Routing/RouteProvider.php).
Drupal\Core\Routing\RouteProvider->getRouteByName() (Line: 426) Drupal\Core\Routing\UrlGenerator->getRoute() (Line: 130) Drupal\Core\Routing\UrlGenerator->getPathFromRoute() (Line: 68) Drupal\Core\Render\MetadataBubblingUrlGenerator->getPathFromRoute() (Line: 790) Drupal\Core\Url->getInternalPath() (Line: 99) Drupal\Core\Path\PathMatcher->isFrontPage() (Line: 1460) theme_get_suggestions() (Line: 311) system_theme_suggestions_html() call_user_func_array() (Line: 403) Drupal\Core\Extension\ModuleHandler->invokeAll() (Line: 230) Drupal\Core\Theme\ThemeManager->render() (Line: 437) Drupal\Core\Render\Renderer->doRender() (Line: 195) Drupal\Core\Render\Renderer->render() (Line: 139) Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 582) Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 140) Drupal\Core\Render\Renderer->renderRoot() (Line: 66) Drupal\Core\Render\BareHtmlPageRenderer->renderBarePage() (Line: 76) Drupal\Core\ProxyClass\Render\BareHtmlPageRenderer->renderBarePage() (Line: 1060) install_display_output() (Line: 160) install_drupal() (Line: 44)
Symfony\Component\Routing\Exception\RouteNotFoundException: Route "<front>" does not exist. in Drupal\Core\Routing\RouteProvider->getRouteByName() (line 201 of /var/www/drupal_86/web/core/lib/Drupal/Core/Routing/RouteProvider.php).
Drupal\Core\Routing\RouteProvider->getRouteByName() (Line: 426) Drupal\Core\Routing\UrlGenerator->getRoute() (Line: 271) Drupal\Core\Routing\UrlGenerator->generateFromRoute() (Line: 105) Drupal\Core\Render\MetadataBubblingUrlGenerator->generateFromRoute() (Line: 753) Drupal\Core\Url->toString() (Line: 1379) template_preprocess_page() (Line: 1481) template_preprocess_maintenance_page() (Line: 1510) template_preprocess_install_page() (Line: 287) Drupal\Core\Theme\ThemeManager->render() (Line: 437) Drupal\Core\Render\Renderer->doRender() (Line: 195) Drupal\Core\Render\Renderer->render() (Line: 501) Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 102) __TwigTemplate_a8363d0f20b1fc2295a546087d2fed57738f6dc287d19bfa29e4901aa5b28836->doDisplay() (Line: 443) Twig\Template->displayWithErrorHandling() (Line: 414) Twig\Template->display() (Line: 422) Twig\Template->render() (Line: 64) twig_render_template() (Line: 384) Drupal\Core\Theme\ThemeManager->render() (Line: 437) Drupal\Core\Render\Renderer->doRender() (Line: 195) Drupal\Core\Render\Renderer->render() (Line: 139) Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 582) Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 140) Drupal\Core\Render\Renderer->renderRoot() (Line: 66) Drupal\Core\Render\BareHtmlPageRenderer->renderBarePage() (Line: 76) Drupal\Core\ProxyClass\Render\BareHtmlPageRenderer->renderBarePage() (Line: 1060) install_display_output() (Line: 260) _drupal_log_error() (Line: 605) _drupal_exception_handler()