Thanks again for your answer !
The warning about google bucket was about using for backups because it couldn’t list the files.
I already posted on how to fix this
Are you suggesting I update the OP with that information ? I don’t believe I can.
Again, the backup works, but the upload of the assets doesn’t, according to the OP, this was supposed to work even without the Storage Legacy Bucket Owner rights.
I think there might be a regression here, what do you think @Falco ?