SAP WEB IDE - Unhandled Error: undefined is not a function

Hello all,

I was trying to do an exercise from the Open SAP course and adding a simple form to my app. Since then, the layout started to showing up an error message popup and was not closing. I do not remember the exact message.

I tried to reload the SAP Web IDE URL, but now it shows the error "Unhandled Error: undefined is not a function" and does not load anymore.

So, I can't load the SAP Web IDE anymore

Any ideas?