I'm unable to add a field to a hosted feature I created. I've tried it through the data tab of the features details page, as well as via the table in a map; but, all I get is "Error" (with no details) whenever I try. Any ideas?
I created the feature, and am even a Level 2 admin.
Can you check to see if there's any relevant entries in Portal or Server logs?
Also, can you try adding a field again with the browser's dev tools open? If you inspect the network traffic, do you see any failed requests? What do the responses look like?