When I try to backup system I get "We can't create the backup right now."
I can however do a database backup
I have tried to exclude media file but same result.
I have the same rights as always..
But I have moved the files from magento2 to rootfolder...
You need to run below command to get system backup,
System backup included magento file system excluding pub/static and var directory.
php bin/magento setup:backup --code
After completed command one new folder generate inside root var/backups