phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('797c266870dfd14096b4ea72d6b9454e', -1, 1561004087, 1561004087, '36a11ff7', 22, 0, 0)

Line : 189
File : sessions.php