Fatal error: Uncaught Error: Interface "Psr\EventDispatcher\StoppableEventInterface" not found in /var/www/html/usophy/vendor/league/commonmark/src/Event/AbstractEvent.php:30
Stack trace:
#0 {main}
thrown in /var/www/html/usophy/vendor/league/commonmark/src/Event/AbstractEvent.php on line 30