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 ('e10ebdc4f4db28f63a3e8f3e77cd43df', -1, 1614931409, 1614931409, '03ee07ca', -12, 0, 0)

Line : 189
File : sessions.php