I can't see how to add to the previous topic, so here's a duplicate.
I have the same problem as the OP. Here's a screenshot.
Here's the actual message. Not sure if the dash is there because it's a line break or part of the message.
The operation couldn't be completed. (InterchangeCall-backErrorDomain error 0.)
Well kinda ... I've just realised that my situation is bit different. I'm using the "Capture and store text from web pages" shortcut at https://beorgapp.com/learning/shortcuts-web-pages/.
The shortcut is at https://www.icloud.com/shortcuts/c18e9836d08c4e528e7a0ed6a472910b
I was actually trying to work out a way of storing the path and filename of an image to Beorg, but figured I'd modify this shortcut rather than start from scratch.
I have a similar issue with this shortcut, but little different.
Using it on iPad and it work only once, next calls doing nothing - seems something prevent it to work, but I have no explicit messages. To make it work again need a reboot.
I've had all sorts of issues with Shortcuts and share sheets for the past few months with iOS 14. I use Reeder for keeping articles for reading later and sometimes it disappears from the share sheet until I reboot. I wonder if this is similar to the issue you are experiencing? Maybe fingers crossed for iOS 14.5?