phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7028d734e1d23775ad6124026502bd23' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('7028d734e1d23775ad6124026502bd23', -1, 1770896677, 1770896677, 'd849d876', 6, 0, 0)

Line : 187
File : sessions.php