Hi World Anvil Developers,
I saw a variant of this problem discussed by one of the Discord moderators, but want to make sure it is reported, since I can't seem to find any no bug reports on the issue.

After the new interface update, I receive errors every time I try to save a change to a category.
I doesn't matter what change I make, or to which category. It seems to be same problem on all my categories.

Everytime push the save button, when editing a category with the "Old Version Edit" function, I receive this 404 error:

Steps to Reproduce

Edit a category with the "Old Version Edit" function.
Make a change and push the save button.

Operating System

Browser

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