language prefix

Hello,

In my recent log entries I see that a Guest user hits the below link very very often (maybe a crawler?) which is causing an error: http://www.example.com/fr/tracker?component=All&category=All&priority=2&...
And the message shown is: Illegal choice 75 in Items per page element.

I have English as www.example.com and French as www.example.com/fr

The Robot.txt has the below..but do I need to add "Disallow: fr/tracker/" as well?
Disallow: /tracker/

Can this module help me?

Thanks!