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 ('2732e0c9c482ef1e11f2e90fdadc5ed3', -1, 1730415860, 1730415860, '03937eb4', -1280, 0, 0)

Line : 195
File : sessions.php