Make it so I don't get routing error emails

[RyanTG]

I get a lot of emails that are some variation of the below snippet. How do we stop this? I'm guessing it's somewhere in heroku. But I don't have access to pbm-blog in heroku (I only see pbm), so I can't fiddle around.

A ActiveRecord::RecordNotFound occurred in posts#index:

  ActiveRecord::RecordNotFound
  app/controllers/posts_controller.rb:6:in `index'

-------------------------------
Request:
-------------------------------

  * URL       : http://blog.pinballmap.com/id_dsa
  * IP address: xxx
  * Parameters: {"controller"=>"posts", "action"=>"index", "format"=>nil, "tag"=>"id_dsa"}
  * Rails root: /app

-------------------------------
Session:
-------------------------------

  * session id: nil
  * data: #<ActionDispatch::Request::Session:0x7fc2dcbe1e18 not yet loaded>

[RyanTG]

@scottwainstock I can't figure out how to make it so I don't receive emails about routing errors on the blog. Do you know how to do that?