Failed to restore from backup: All subscriptions and replication slots must be dropped before a backup can be restored.

As the error suggests, you must first drop any current subscriptions or replication slots to restore backups.

You can check those with:

1
2
3
SELECT * FROM pg_replication_slots;SELECT * FROM pg_subscription;

You can drop them with:

1
2
3
DROP SUBSCRIPTION <subscription>;SELECT pg_drop_replication_slot(slot_name);

NOTE: These are destructive actions. This is fine since you will overwrite your database with a backup.