phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4b7d20e9813789f65e0564377e338a95' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('4b7d20e9813789f65e0564377e338a95', -1, 1771465594, 1771465594, 'd849d87b', -9, 0)

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