# Strange routing error in production logs

**URL:** <https://www.ruby-forum.com/t/strange-routing-error-in-production-logs/129770>\
**Category:** Rails\
**Created:** [February 21, 2008, 12:13pm UTC](https://www.ruby-forum.com/t/strange-routing-error-in-production-logs/129770 "2008-02-21T12:13:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Wildtangent](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/df788c/32.png) [@Wildtangent](https://www.ruby-forum.com/u/Wildtangent)\
**Post date:** [February 21, 2008, 12:13pm UTC](https://www.ruby-forum.com/t/strange-routing-error-in-production-logs/129770/1 "2008-02-21T12:13:34Z")

</div>

I just changed info-level logging to warn level in my production log  
and it was quite enlightening! I found there were a lot of weirdly  
formed requests and in particular a lot of requests like this:

ActionController::RoutingError (No route matches “/undefined/  
firebug.html”  
with :subdomain=\>“www”, :method=\>:get, :domain=\>“[mydomain.com](http://mydomain.com)”,  
:host=\>“[www.mydomain.com](http://www.mydomain.com)”}):

(domain name changed to protect the innocent)

Anyone seen this or something similar?