Adding a Help Desk Category - Error Message

Summary:

When adding a help desk category (normal task) it is now giving us an error message

The matrix is not valid. You must fix the matrix rules before you can continue. (QP-2715597)

Never seen this before and we add new categories often

Content (required):

Steps to reproduce:

Navigator

Subscription Management

Standard Coverage

Add or copy an existing category

Click Save and receive the error above

Version (include the version you are using, if applicable):

Redwood Help Desk

Code Snippet (add any code snippets that support your topic, if applicable):

The matrix is not valid. You must fix the matrix rules before you can continue. (QP-2715597)