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 ('543e3e3e426c038be37d2281ad0045bc', -1, 1601255277, 1601255277, '03e40a11', 21, 0, 0)

Line : 187
File : sessions.php