Architecture / Installation

The reason - this yahoo service is closed. There is no code in tiki with 'query.yahooapis.com'. It must be some custom link, service or widget/module with this url in your tiki. It used to be weather service or something else. You can google "Unable to connect to query.yahooapis.com". Or get some idea from this: https://github.com/googlecodelabs/your-first-pwapp/issues/144