Buddypress Activity+ Group Photo Uploader error

Hi WPMUDEV Community

On the latest version of Buddypress and WP I get a strange error in BP activity+ plugin.

When I create a group in Buddypress and try to upload a group Profile Picture, the upload button is not working:

I also get following error in the Browser Console:

Is there a way to fix this?

Kind regards,
Lagger Gandalf