برای من که این اومد :

XML Parsing Error: unexpected parser state Location: jar:file:///C:/Program%20Files/Mozilla%20Firefox/browser/omni.ja!/chrome/browser/content/browser/aboutNetError.xhtml Line Number 438, Column 68:
<div id="ed_connectionFailure">&connectionFailure.longD esc;</div>
و بعد از رفرش :

Unable to connect

Firefox can't establish a connection to the server at payline.ir.

The site could be temporarily unavailable or too busy. Try again in a few moments.
If you are unable to load any pages, check your computer's network connection.
If your computer or network is protected by a firewall or *****, make sure that Firefox is permitted to access the Web.