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 ('e6987581f4a8ea305eb81b2f3b5d2c62', -1, 1714128998, 1714128998, '0389dc78', 7, 0)

Line : 158
File : sessions.php