phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5c6f779c7546a4c84719bc14359dff06' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('5c6f779c7546a4c84719bc14359dff06', -1, 1768306659, 1768306659, 'd849d8a4', 2, 0)

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