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 ('267517099dab2ef280b4d79a14cc9dfd', -1, 1750178636, 1750178636, 'd849d886', -9, 0, 0)

Line : 190
File : sessions.php