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 ('7c1e2b418a2de4e9115c21b1c67a0fde', -1, 1750056808, 1750056808, 'd849d8da', -9, 0, 0)

Line : 190
File : sessions.php