New site version cannot be gathered

Errors in gathering site version.

If you get the following errors when running the BigFix diagnostic tool:
Test failed: The Client Plug-in registration
Reason: Unexpected HTTP response: 504 Proxy Error: Unable to connect to
remote host "127.0.0.1:52311" or host not responding - URL
"http://127.0.0.1:52311/cgi-bin/bfenterprise/clientregister.exe?RequestType = 
version"(http://127.0.0.1:52311/cgi-bin/bfenterprise/clientregister.exe
?RequestTy pe=version%27),
errno: 111 HTTP request failed with an error.

Test failed: Plug-post results
Reason: Unexpected HTTP response: 504 Proxy Error: Unable to connect to remote 
host "127.0.0.1:52311" or host not responding - URL
"http://127.0.0.1:52311/cgi-bin/bfenterprise/PostResults.exe"
(http://127.0.0.1:52311/cgi-bin/bfenterprise/PostResults.exe%27),
errno: 111 HTTP request failed with an error.

Test failed: BESGatherMirror plug-in
Reason: Unexpected HTTP response: 504 Proxy Error: Unable to connect to
remote host "127.0.0.1:52311" or host not responding - URL
"http://127.0.0.1:52311/cgi-bin/bfenterprise/BESGatherMirror.exe/-version] 
"([http://127.0.0.1:52311/cgi-bin/bfenterprise/BESGatherMirror.exe/-version%27),
errno: 111 HTTP request failed with an error.
you do not gather the new site version. To solve the problem, complete the following steps:
  1. Perform the steps needed to set up a proxy connection on the server, as described in Setting a proxy connection on the server, and be sure to add the following values in the exception list: localhost, 127.0.0.1, <server_IP>, <server_hostname>.
  2. Check that the environment variable http_proxy is not configured. If it is, remove it and restart your operating system.