Javascript-css Request Blocking page loading, how to find the request source.

I debug a Web page locally each time a CSS request is loaded:
Http://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,600,700,300italic,400italic,600italic
However, it is possible that the request is failed and blocked by the wall or something. So I want to find out which file the CSS request is issued and destroy it, but the file that the Debug tool is located in does not find the request.

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I debug a Web page locally each time a CSS request is loaded:
Http://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,600,700,300italic,400italic,600italic
However, it is possible that the request is failed and blocked by the wall or something. So I want to find out which file the CSS request is issued and destroy it, but the file that the Debug tool is located in does not find the request.

There is an address you can search directly in the code.
Some JS may not be called by your program, but the extension program calls.

This 69 line is the number of JS error, not the number of lines to initiate the request, I think the console should also have an error message it? Or a search to see which JS initiated the request

You can find it in the CSS file of bootstrap. @font inside.

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