I can’t backup discourse I tried multiple time but the same error occur again and again here is the log
[2021-03-04 08:24:58] Finalizing backup...
[2021-03-04 08:24:58] Creating archive: how-to-discuss-2021-03-04-082415-v20210302164429.tar.gz
[2021-03-04 08:24:58] Making sure archive does not already exist...
[2021-03-04 08:24:58] Creating empty archive...
[2021-03-04 08:24:58] EXCEPTION: lib/discourse.rb:93:in `exec': tar: /var/www/discourse/public/backups/default/how-to-discuss-2021-03-04-082415-v20210302164429.tar: Cannot open: Permission denied
tar: Error is not recoverable: exiting now
[2021-03-04 08:24:58] lib/discourse.rb:103:in `execute_command'
lib/discourse.rb:93:in `exec'
lib/discourse.rb:43:in `execute_command'
/var/www/discourse/lib/backup_restore/backuper.rb:202:in `create_archive'
/var/www/discourse/lib/backup_restore/backuper.rb:40:in `run'
/var/www/discourse/script/spawn_backup_restore.rb:9:in `backup'
/var/www/discourse/script/spawn_backup_restore.rb:34:in `block in <main>'
/var/www/discourse/script/spawn_backup_restore.rb:4:in `fork'
/var/www/discourse/script/spawn_backup_restore.rb:4:in `<main>'
[2021-03-04 08:24:58] Deleting old backups...
[2021-03-04 08:24:58] Cleaning stuff up...
[2021-03-04 08:24:58] Removing '.tar' leftovers...
[2021-03-04 08:24:58] Marking backup as finished...
[2021-03-04 08:24:58] Refreshing disk stats...
[2021-03-04 08:24:59] Notifying 'HowToDiscuss' of the end of the backup...
plz help🙁