Unable to select other tab in Request view

Unable to select other tab in Request view

I dont know what happened. I was able to select the tabs "Account Info", "Resolutions", "Time entry", "Activities" and "History" and now, when I try to select theses tabs it does nothing.

Opening the Chrome Java Script console I see the error:

  1. Uncaught ReferenceError: changeRequestTab is not defined
    1. (anonymous function) WorkOrder.do:1585
    2. onclick

What can I do to solve this. I already tried Firefox and IE and the same happens

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