phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '602a31ed5feb1ffadead7bea466f995c' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('602a31ed5feb1ffadead7bea466f995c', -1, 1771607647, 1771607647, 'd849d892', -2, 0)

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