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) VALUES ('e8502f07e2d23f5fc703e08a6cbd6d2c', -1, 1714641075, 1714641075, '03131bb2', -7, 0)

Line : 158
File : sessions.php