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 ('c2b239aeeb104eb91dd4c7e4c497d92b', -1, 1614925671, 1614925671, '03ee07ca', -5000, 0, 0)

Line : 189
File : sessions.php