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 ('46ae9243a6d0c4f3a05b5136307c8cc2', -1, 1714152986, 1714152986, '0d3b7aa2', 20, 0)

Line : 158
File : sessions.php