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 ('080da0a56db88c8b5552c556ca092cc3', -1, 1544934202, 1544934202, '22e41e45', 30, 0, 0)

Line : 172
File : sessions.php