Drupal\Core\Extension\Exception\UnknownExtensionException: The theme stark does not exist. in Drupal\Core\Extension\ThemeHandler->getTheme() (line 208 of /home/site/wwwroot/core/lib/Drupal/Core/Extension/ThemeHandler.php).
Drupal\Core\Extension\ThemeHandler->getTheme('stark') (Line: 17) gavias_content_builder_theme_name() (Line: 26) include_once('/home/site/wwwroot/modules/gavias_content_builder/gavias_content_builder.module') (Line: 147) Drupal\Core\Extension\Extension->load() (Line: 128) Drupal\Core\Extension\ModuleHandler->load('gavias_content_builder') (Line: 141) Drupal\Core\Extension\ModuleHandler->loadAll() (Line: 586) Drupal\Core\DrupalKernel->preHandle(Object) (Line: 502) install_begin_request(Object, Array) (Line: 115) install_drupal(Object) (Line: 48)
TypeError: Argument 1 passed to Drupal\Core\Routing\CurrentRouteMatch::getRouteMatch() must be an instance of Symfony\Component\HttpFoundation\Request, null given, called in /home/site/wwwroot/core/lib/Drupal/Core/Routing/CurrentRouteMatch.php on line 87 in Drupal\Core\Routing\CurrentRouteMatch->getRouteMatch() (line 99 of /home/site/wwwroot/core/lib/Drupal/Core/Routing/CurrentRouteMatch.php).
Drupal\Core\Routing\CurrentRouteMatch->getRouteMatch(NULL) (Line: 87) Drupal\Core\Routing\CurrentRouteMatch->getCurrentRouteMatch() (Line: 49) Drupal\Core\Routing\CurrentRouteMatch->getRouteObject() (Line: 41) Drupal\Core\Routing\AdminContext->isAdminRoute() (Line: 611) system_page_attachments(Array) (Line: 65) Drupal\Core\Render\BareHtmlPageRenderer->renderBarePage(Array, 'Error', 'install_page', Array) (Line: 76) Drupal\Core\ProxyClass\Render\BareHtmlPageRenderer->renderBarePage(Array, 'Error', 'install_page', Array) (Line: 1054) install_display_output(Array, Array, Array) (Line: 267) _drupal_log_error(Array, 1) (Line: 618) _drupal_exception_handler(Object)