Fatal error: Uncaught Error: Class 'Flarum\Foundation\AbstractValidator' not found in /home/gcpsxdwf/public_html/forum.oandplibrary.org/vendor/flarum/core/src/Post/PostValidator.php:14 Stack trace: #0 {main} thrown in /home/gcpsxdwf/public_html/forum.oandplibrary.org/vendor/flarum/core/src/Post/PostValidator.php on line 14