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 ('76f2e8b6664b5306682ccb0c3881133b', -1, 1748173747, 1748173747, '12bfa6a8', 33, 0, 0)

Line : 190
File : sessions.php