Hello,
I’m running into this error when trying to submit an action center item. And I’m not really sure what is causing this..
All my packages are up to date.
I ended up just remaking the workflow from scratch and that fixed the issue. No idea what was causing this. OK.
Hahaha, yeah, I have been there.
Sometimes you can get extra info using the chrome dev tools and checking the console logs or the network traffic for bad API calls.