phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO bb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('9420cd1a4e060aaa32fd6081e4d048c6', -1, 1603621214, 1603621214, '0359570c', -12, 0, 0)

Line : 198
File : sessions.php