Error editing Resource category permissions

[MySiteGuy]

The issue I'm having is similar to https://xenforo.com/community/threads/error-setting-node-permissions.222172/

In the admin panel, go to the Resources section and select categories. If you edit any categories here, it works.

However, if you go to the Groups & permissions section, select Resource categories permissions and then select any category to edit it's permission. I get this error:
Code:

An exception occurred: [InvalidArgumentException] Class XFRM\Permission\CategoryList does not match formatter...

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Error editing Resource category permissions

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