Warning: preg_match(): Compilation failed: quantifier does not follow a repeatable item at offset 1 in Symfony\Component\HttpFoundation\Request->getHost() (line 1162 of /home/t3e5l1e3c/vendor/symfony/http-foundation/Request.php).

Symfony\Component\HttpFoundation\Request->getHost() (Line: 1699)
Drupal\Core\DrupalKernel::setupTrustedHosts(Object, Array) (Line: 1135)
Drupal\Core\DrupalKernel->initializeSettings(Object) (Line: 738)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

The provided host name is not valid for this server.