Good evening MATHIJS and welcome to the Events Calendar Support forum!
Thank you for reaching out to us.
We are sorry to hear about the error message you have been getting while trying to use the Community Events add-on.
I would love to help you with this topic.
As a first troubleshooting step, could you please provide us with your complete system information in a private reply using the instructions found in the following link?
https://theeventscalendar.com/knowledgebase/sharing-sys-info/
Secondly, I believe you are using WPML. If that is the case, how you are setup will make a huge difference and, at this point Community Events is not officially supported with WPML. Only the Events Calendar and the Events Calendar Pro are.
Can you confirm that this is the case ?
Best regards,
Geoff B.