I think I might have figured out why… The error message was not properly cleared. Fixing it right now…
The rest of the system still works, as long as the amount at the lower right is still updating. If you change 1 to 2 you should notice the amount changes, which means it’s updating correctly (except for the error message that got stuck). So you should be able to ignore the error message and proceed without problem; let me know if you encounter any other issue!