phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8bd935ee952abf782ff1229806eda780' for key 'PRIMARY'

INSERT INTO aristo_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('8bd935ee952abf782ff1229806eda780', -1, 1771804023, 1771804023, 'd849d880', -9, 0, 0)

Line : 187
File : sessions.php