Waht this error is about?-"No execution server available: localhost request failed: couldn't connect to host"

Waht this error is about?-"No execution server available: localhost request failed: couldn't connect to host"

by vaibhav shukla -
Number of replies: 0

I am integrating vpl module in moodle with execution server(vpl-jail-server).

When I command-sudo service vpl-jail-server start

it gives:vpl-jail-server: unrecognized service.

Execution server address:http://localhost:8080

URL :/HELLO

Port:8080

JAILPATH:/JAIL

VPL version:3.1

One thing to mention is that xinetd was not installed on my system prior to vpl-jail-server installation.I realised it and installed later on.
The only output my c program showing is the error i mentioned:
"No execution server available: localhost request failed: couldn't connect to host "

I want to know what's exactly going wrong?
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