Point Trigger to campaign is not working

Your software
My Mautic version is: 4.4.9
My PHP version is: 8
My Database type and version is:

Your problem
My problem is: configuring point trigger to campaign isn’t working

These errors are showing in the log:

[2023-09-13 02:19:19] mautic.WARNING: PHP Warning - Undefined array key “eventName” - in file /home/public_html/app/bundles/PointBundle/Model/TriggerModel.php - at line 353 {“hostname”:“MstPanel”,“pid”:489564}

this might be related

[2023-09-13 02:19:19] mautic.CRITICAL: Uncaught PHP Exception Symfony\Component\Debug\Exception\FatalThrowableError: “Argument 1 passed to “Symfony\Component\EventDispatcher\EventDispatcherInterface::dispatch()” must be an object, “NULL” given.” at /home/public_html/vendor/symfony/event-dispatcher/EventDispatcher.php line 63 {“exception”:“[object] (Symfony\Component\Debug\Exception\FatalThrowableError(code: 0): Argument 1 passed to "Symfony\Component\EventDispatcher\EventDispatcherInterface::dispatch()" must be an object, "NULL" given. at /home/public_html/vendor/symfony/event-dispatcher/EventDispatcher.php:63)”} {“hostname”:“MstPanel”,“pid”:489564}

Steps I have tried to fix the problem: don’t know what to do…