Please help me resolve this FB pixel issue (Review potentially violating personal data)

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I have a long-standing FB pixel for a Shopify store of mine. I've never had an issue with it, but today I received this warning concerning it: 'review potentially violating personal data'). When I clicked on expand, this was the specific concern:

PageView. URL Query Parameter: email
The technical side of things is definitely not my forte, so I have no idea how to resolve this. Could I get some pointers from the good folks here in the community?
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