Thank you, we disabled the W3 Cache and yes please keep it disabled till you finish the development and make sure every change you do is actually reflected in the front end of the website, Then at the end of the project you can work on the optimization.
I have a hard time to find the correct path to test the booking module case. Would you please help me to get to the error? Give me the steps I should take and which event to check and what to do to get the error.
Also, I wonder if you succeeded to go to Bookings menu directly from the dashboard and add one for testing?
Also, make sure that you checked this video: http://webnus.net/dox/modern-event-calendar/#line10_3