Invalid Data Type error

We cannot get the statement below to work, though it feels like it should be pretty simple. Each half of the statement works, but when put together, we get "INVALID DATA TYPE."

=COUNTIFS([Director]:[Director], "John Doe", AND([Audit Complete]:[Audit Complete], =1))

Basically, we want to count the number of completed audits per Director.

The Director column is a dropdown, but we've tried it as a contact list and also as Text/Number, but get the same results. The Audit Complete column is a checkbox. Again, both of them work on their own, but we cannot seem to join them. We have other very similar formulas that are giving us no trouble. Help!

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