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 ('987d6c1c3a4fc899f31d1a1a1ea1c8b8', -1, 1552974209, 1552974209, '36f31171', -10, 0, 0)

Line : 189
File : sessions.php