Where to find WebResource.axd content? – Blancer.com Tutorials and projects

I got the error:

Uncaught TypeError: Cannot read properties of undefined (reading 'msie')
    at WebResource.axd?d=9kt8eMc73gjmdxKdtauxMGWpeEJPPdzsEytOzsGkf9WUbOAjb_UolpPdxPWIQIcXQtAs860WkwqCX0v0efdVU1qWiuHOy7z3bQxYZ2BDe9pDHv9U2AEVJaJreobpRQbPSvNzEHcinTIvb9e8phydNw2&t=635203711126644101:7
    at WebResource.axd?d=9kt8eMc73gjmdxKdtauxMGWpeEJPPdzsEytOzsGkf9WUbOAjb_UolpPdxPWIQIcXQtAs860WkwqCX0v0efdVU1qWiuHOy7z3bQxYZ2BDe9pDHv9U2AEVJaJreobpRQbPSvNzEHcinTIvb9e8phydNw2&t=635203711126644101:7

when i click on the link it opens JS script that i cant find on my solution.

I tried to remove from web.config

<httpHandlers>
      <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false" />

but it did not worked. Where is the JS file?