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 ('b18a0634a475efe7403d89e7c0a8a809', -1, 1603621550, 1603621550, '0359570c', -12, 0, 0)

Line : 198
File : sessions.php