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 ('7b95e590eee29af0d7d1852951d2a29b', -1, 1553303068, 1553303068, '34c91bd3', 3, 0, 0)

Line : 189
File : sessions.php