phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb2_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('8d60353c907e7e50066aa562f8c43124', -1, 1582915428, 1582915428, '03e9d95b', -10, 0, 0)

Line : 189
File : sessions.php