WebApp Builder will not load

[DonMeltzMarist]

We have a 50 seat license at Marist College, and about 34 students and faculty using the account.

All is well except for when we try to use the WebApp Builder. It simply will not load. We get a blank page. See the attached .png.

I've tried multiple browsers on multiple computers. I've tried accessing the account through two different networks. Same results.

I'm baffled. I don't even know where to start.

[ReeseFacendini · Accepted solution]

Does your organization have a custom theme enabled?  Or was one setup at some point, then removed?

[DonMeltzMarist]

Moments after posting this I found someone else had the same problem with Experience Builder. Solution was to add a color to the header, body, or button property in shared theme.

I added a background color to the header in our shared theme (which was totally blank before), and this solved my  problem.

Strange behavior.

Thank you.