We need to enable in case if the backup functionality is disabled. By default backup functionality disabled in Magento2.x.
Admin -> System -> Backups :
Backup functionality is disabled
Backup functionality is currently disabled. Please use other means for backups
To enable we have to run below CLI command or via admin system configuration section.
Via CLI Command :
Run following command in root directly of Magento project.
bin/magento config:set system/backup/functionality_enabled 1
Via admin Configuration :
admin -> Store -> Configuration -> Advanced -> System -> Backup Settings -> Enable Backup -> YES
After Enable :
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