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 ('323ca8b9039b914d3596add2034c8b92', -1, 1714381210, 1714381210, '038e7cfc', 20, 0)

Line : 158
File : sessions.php