Did you have a conflict between Events Calendar and LearnPress?

Question

WordPress

Good afternoon. There was a problem. Updated the Events Calendar and LearnPress plugin to the latest and now it is not possible to add, remove or edit widgets. The error itself is allegedly in the Events Calendar file, BUT if you disable LearnPress, everything works fine. On the contrary also.
Screenshot of the error: https://www.screencast.com/t/rqNQtorchc
Has anyone encountered this?
PS: On the default theme (TwentySeventeen) everything is the same, that is, this is not a problem in my theme.