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 ('483c7a2a48e5fe11acc10cc6b43905a5', -1, 1553300670, 1553300670, '34c91bd3', 21, 0, 0)

Line : 189
File : sessions.php