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 ('56f7548ef989a49856c9ad1cd2a5e9a7', -1, 1568937392, 1568937392, '22ccb0bd', 47, 0, 0)

Line : 189
File : sessions.php