Calendar Bug version 3.9

hello, I just tested the new version 3.9 with the calendar. Thanks for the addition except that it does not work. can you please explain to me?

@Florian this is not a bug, I will be moving the question to the appropriate category. The calendar is an event manager. After configuring it, you can click on a date in the calendar to add an event or click on an event in the calendar to update the event.

It works perfect for me … But in Laravel Vue, I have laravel vue and nodejs. In Laravel Vue works correctly, but in Nodejs it gives me errors.