Fatal error: Uncaught Error: Interface 'Psr\EventDispatcher\StoppableEventInterface' not found in /home/telemeduser/public_html/AOCN-IANCON-2022/vendor/symfony/event-dispatcher-contracts/Event.php:31
Stack trace:
#0 {main}
thrown in /home/telemeduser/public_html/AOCN-IANCON-2022/vendor/symfony/event-dispatcher-contracts/Event.php on line 31