phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7ece89fdf49881a8f5b979f8771f88ab' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('7ece89fdf49881a8f5b979f8771f88ab', -1, 1771171169, 1771171169, 'd849d800', -4, 0, 0)

Line : 187
File : sessions.php