Admin Panel don't work

[cancelarul]

When i try to go on http://192.168.0.101/admin , its type Exception: Nicht genügend Rechte! what means i dont have all the rights, but i follow all the steps i make an account when I open the server, but i can't acess the admin panel and when i try to go on http://127.0.0.1/admin its tell me the page not found 404