vCenter 6.7 cannot import VMware 6.7 Update 3 image.

Attempting to upload image into vCenter Update Manager.  Uploading file progress bar moves pretty quickly most of the way to 100%, then restarts a few times, then quits here.  No error beyond the red banner.

I've updated vCenter and still have this.  No idea what to look at next as there is no error.  G Search indicates one cannot upload an older image but this one is not older.

Thanks