phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '71cd3ed9f6615225e169174c03d8973c' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('71cd3ed9f6615225e169174c03d8973c', -1, 1770384979, 1770384979, 'd849d802', 2, 0)

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