My Solar Battery App - can't delete or edit

I removed a (old, dead) feed for my battery SoC, and now whenever I go into the My Solar Battery app I see this:

How do I get out of this? I cannot edit the app, not delete it. Clicking Ok just immediately pops up the same error again in an endless loop.

I have a new SoC feed available, but no way of changing the App’s configuration to use it.
HELP!

Thanks @Martin_Robinson I’ve fixed this error now, you should be able to access the dashboard.

I’ve blurred your apikey in the image above.