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 ('fd8ff3e391e5441f7829b9a1baa076c2', -1, 1563499797, 1563499797, '12e8637b', 20, 0, 0)

Line : 189
File : sessions.php