It seems like you encountered a login issue after adding your friend as an admin in the permissions. Try the following steps to resolve it:
1. Double-check the code for any syntax errors or typos.
2. Make sure your friend's username is correctly spelled.
3. Restart the game server.
4. Ensure your friend's permissions are set correctly.
5. If the problem persists, contact the game's support or community for further assistance. Good luck