hashtopus - error

i build a server with a hashtopus.
i download a agent and i upload a hash for word 2013.
i assign the agent and in the agent i get:

Benchmarking task for 10s...ERROR: No hashes loaded in red.
and <b>Notice</b>: Undefined variable: HTTP_RAW_POST_DATA in <b>C:\xampp\htdocs\hashyopus\server.php</b> on line <b>874</b>

what can i do?