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 ('781d219abf6ced940f186164a7646d4f', -1, 1560894558, 1560894558, '12d7a113', 36, 0, 0)

Line : 189
File : sessions.php