504 Proxy loop detected

[email protected] Sun, 08 Sep 2013 18:09:35 +0200
Newsgroups gmane.comp.web.polipo.user
Message-ID <[email protected]>
I'm getting this error, when i try to access the site indicated in the 
error msg:

--------------
504 Proxy loop detected

The following error occurred while trying to access 
http://www.verbierbooking.ch/de/index.php:

504 Proxy loop detected
--------------

What does that mean and how i could avoid that?

PS. I'm running polipo inbetween privoxy and tor locally.


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