phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8ddebbe6837fbdf3b908bf7b14e7b580' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('8ddebbe6837fbdf3b908bf7b14e7b580', -1, 1766516592, 1766516592, 'd849d87c', 9, 0)

Line : 158
File : /mnt/100/sda/5/e/lemondedesphasmes/php/phpBB2/includes/sessions.php