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 ('9b7e57986102603a4eb78df0e7bdcf04', -1, 1560789585, 1560789585, '36912d8f', 21, 0, 0)

Line : 189
File : sessions.php