Fatal error: Uncaught Error: Interface "Flarum\Extend\ExtenderInterface" not found in /usr/home/seoulsource/domains/kgaeul.web.id/public_html/vendor/flarum/core/src/Extend/Validator.php:16
Stack trace:
#0 {main}
  thrown in /usr/home/seoulsource/domains/kgaeul.web.id/public_html/vendor/flarum/core/src/Extend/Validator.php on line 16