Personalization - "We can't retrieve all the available events" error message

The error message "We can't retrieve all the available events, it seems that they are too many events. Please check your implementation" in the Personalization page indicates that the Personalization strategy could not retrieve all events because those events are malformed. Therefore, the strategy is 'stuck' to only certain valid events.

To resolve this issue, you can navigate to the Event debugger, review invalid events and your events implementations.