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 ('2014d44c25a6c4bb276fae637d511905', -1, 1737438400, 1737438400, '12e38cfb', -9, 0, 0)

Line : 187
File : sessions.php