Why does it say "Certificate: Unknown" in the process of validating my app in Organizer?

When I validated my app in Orgnaizer, beside "Certificate" it said "Unknown". That has me curious. That doesn't look right. What should it usually say? The app validated successfully.

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If certain anecdotal reports are to be believed, it appears to be an inconsequential bug introduced w/Xcode 10.x

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If certain anecdotal reports are to be believed, it appears to be an inconsequential bug introduced w/Xcode 10.x