Black box in lefthand corner after rendering

[ProtectBiodiversity]

In After Effects, there is a black box that shows up in some of my compositions.  It's the same box in each one. I don't see it during preview. How do I make it stop?!

[Dave_LaRonde]

Purge Memory & Caches and try again.

[Kevin-Monahan]

Hi ProtectBiodiversity,

Are you still facing this problem? If not, let us know how you solved it. If so, please let us know so we can assist you further.

Thanks,

Kevin