HTTP headers: x_csize: 0 Error

[hodgetwins]

Hello guys. I have a problem when i want to start crawling pages on my website using standalone sitemap. I got this error message :

There was an error while retrieving the  URL specified: [ External links are visible to forum administrators only ]
HTTP Code:

HTTP headers:
x_csize: 0

HTTP output:

Screenshot :


Can anyone help me figure out what is the cause of this error message? Thank you. 

[XML-Sitemaps Support]

Hello,

Probably there is a configuration problem - it looks like your server doesn't allow local network connections via port 80 (http) or 443 (https) - as a result sitemap generator is not able to crawl the site. This is usually related to firewall installed at the host - could you please contact your hosting support regarding this?

[hodgetwins]

Oo i see. Ok i will try and contact my host about that. Thank you.