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) VALUES ('572cdb91661c3dc6d86af4ae885af186', -1, 1539847312, 1539847312, '36c6d41e', 0, 0)

Line : 158
File : /Forums/includes/sessions.php