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 ('5068a0b724d9b99af6bda4a02bd76f1b', -1, 1714035203, 1714035203, '0315e929', 2, 0, 0)

Line : 187
File : sessions.php