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 ('23a85e2c70dc94c1e47ecc0e58d05b1f', -1, 1563573596, 1563573596, '12d16807', 3, 0, 0)

Line : 189
File : sessions.php