I do not know what is the exact problem here. But I got to know that it has to do something with content type as td-lambda mentioned in the comments. So I found. When there's an update of the theme available, the site is not accessible via my browser. Instead it downloads a document named with the URL. Downloading a new web browser. To download a different web browser, you need to go to the browser manufactorer's website or use your Phone/Tablet's "App.
Downloaded to my browser where - has
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