Need to add missing methods of ArrayAccess interface to FacebookAds\Object\ServerSide\OriginalEventData class

[roman-nikulyak-quarks-tech]

Error: Class FacebookAds\Object\ServerSide\OriginalEventData contains 4 abstract methods and must therefore be declared abstract or implement the remaining methods (ArrayAccess::offsetExists, ArrayAccess::offsetGet, ArrayAccess::offsetSet, ...)

#file: "src/FacebookAds/Object/ServerSide/OriginalEventData.php"

You can also remove unused properties:
private $event_name;
private $event_time;
private $order_id;
private $event_id;

[mbvb1223]

I think the issue was fixed already here 4a9324b

So you may need to upgrade your vesion to v22.0.3