- I am trying to launch Experience Builder from my AGOL account and keep getting the error message "“Cannot read property ‘background’ of undefined”. This is not consistent and occasionally/rarely can get through. This is also happening for 5 others in my team from our organizational account. All other web apps work fine.
- It doesn't happen with another organizational account we manage for a customer so isn't PC, network related (we all work from separate locations).
- Only changes recently have been to our short url for AGOL, accepted the HTTPS requirement and accepted the template Homepage for AGOL.
- All users are User Type = Advanced and all have the Addons for the web apps.
This is stopping a significant development for us using the new & updated tools from Esri so would like it resolved. Any input and ideas really appreciated.