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 ('9acaf2f2d5d6b6aeee3b9e48fc9a4ae5', -1, 1563501068, 1563501068, '12e8637b', 20, 0, 0)

Line : 189
File : sessions.php