I ran into the same problem. I developed a very intensive AJAX application that works fine on the local host. Using an identical machine to test the site in real time (hosted by GoDaddy), the button click to activate the AJAX function is interrupted.
If I press the button several times and see what happens in the developer’s tools, I see Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without sending any data.
the symbol marked as "(unsuccessful)":

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