Hi,
I think this has something to do with the target service that is not responding or taking to long to respond on your api call.
According to https://hc.apache.org/httpcomponents-core-ga/httpcore/apidocs/org/apache/http/NoHttpResponseException.html it means: "Signals that the target server failed to respond with a valid HTTP response."
Perhaps you can contact the target side to figure out what happens on their end.
Good luck.
Cheers,
Jeffrey