phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('1eeac3c9d2614889fb890be3c8cfddca', -1, 1730416954, 1730416954, '03933745', -1280, 0, 0)

Line : 195
File : sessions.php