Additional uncaught exception thrown while handling exception.

Original

Drupal\Core\Extension\Exception\UnknownExtensionException: The theme stark does not exist. in Drupal\Core\Extension\ThemeHandler->getTheme() (line 208 of /home/govcloud2/public_html/content/core/lib/Drupal/Core/Extension/ThemeHandler.php).

Drupal\Core\Extension\ThemeHandler->getTheme('stark') (Line: 25)
gavias_blockbuilder_theme_name() (Line: 33)
include_once('/home/govcloud2/public_html/content/modules/gva_blockbuilder/gavias_blockbuilder.module') (Line: 147)
Drupal\Core\Extension\Extension->load() (Line: 128)
Drupal\Core\Extension\ModuleHandler->load('gavias_blockbuilder') (Line: 141)
Drupal\Core\Extension\ModuleHandler->loadAll() (Line: 586)
Drupal\Core\DrupalKernel->preHandle(Object) (Line: 505)
install_begin_request(Object, Array) (Line: 114)
install_drupal(Object) (Line: 44)

Additional

TypeError: Argument 1 passed to Drupal\Core\Routing\CurrentRouteMatch::getRouteMatch() must be an instance of Symfony\Component\HttpFoundation\Request, null given, called in /home/govcloud2/public_html/content/core/lib/Drupal/Core/Routing/CurrentRouteMatch.php on line 87 in Drupal\Core\Routing\CurrentRouteMatch->getRouteMatch() (line 99 of /home/govcloud2/public_html/content/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: 608)
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: 1061)
install_display_output(Array, Array, Array) (Line: 267)
_drupal_log_error(Array, 1) (Line: 618)
_drupal_exception_handler(Object)