Copying photos and videos from iCloud to Google

I have tried to copy my photos and videos from iCloud to Google three times

Photos have been copied without any issues

I have 4TB storage on my Google drive that is far more than what is required

But I get this message from Apple regarding the videos

Your videos could not be copied to Google Photos

Apple received a request to copy your videos from iCloud to Google Photos. This request could not be completed due to an error during transfer.