phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '40c9c3340d154a6ab7d4c14918b39e20' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('40c9c3340d154a6ab7d4c14918b39e20', -1, 1771064880, 1771064880, 'd849d87b', 37, 0)

Line : 180
File : /www/includes/sessions.php