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 ('db8e342817d736ea6d9d78dd328945a5', -1, 1638267849, 1638267849, '0359cc7f', -10, 0, 0)

Line : 187
File : sessions.php