Realm database backup issue: auto backup missing and manual backup cannot be executed

Short description of the issue

Realm database does not perform automatic backup, and manual backup cannot be triggered successfully.

Steps to reproduce the issue

1. Play the game for a period of time and generate game data.

2. Close the game and wait for the automatic backup process to occur.

3. Check the Realm database backup files/status.

4. Try to manually trigger a backup of the Realm database.

Expected result

• The Realm database should be automatically backed up according to the configured backup mechanism.

• Users should be able to manually trigger a backup successfully when needed.

Actual result

• The Realm database is not automatically backed up.

• Manual backup cannot be forced or triggered successfully.

• No backup file is generated after attempting the backup process.