Black Screen in Designer Mode

[djudes]

It was also raised by someone else in the How-to Section :

Black page in app builder

Hi all ! Hope you’re doing well, and that my question is not too stupid Since this morning, there is one page of my app that i can’t open in the app builder, it always gives me a black page : every menu from the builder disappear, there are no more button, just a blank black page. - oh no, I lied. I tried another time with another profil, and there is ONE button : the (?) in the bottom corner. It’s a form page, that works from the app page, and I wondered if any of you had ever ex…