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 ('85f560427c60bef0cace1139aab1edf5', -1, 1730424772, 1730424772, '030fefd1', -1, 0, 0)

Line : 195
File : sessions.php