Fatal error: Uncaught Error: Class "Flarum\Foundation\AbstractValidator" not found in /usr/home/seoulsource/domains/kgaeul.web.id/public_html/vendor/flarum/extension-manager/src/UpdateExtensionValidator.php:14
Stack trace:
#0 {main}
  thrown in /usr/home/seoulsource/domains/kgaeul.web.id/public_html/vendor/flarum/extension-manager/src/UpdateExtensionValidator.php on line 14