if there is no errors , this page will successfully send to the browser but it won't rendered because the browser expect to receive an json content not an html page .
you can find the required page with the updated data if you to the page in the browser and clicked right click ==> then press inspect ==> then go to Network ==> then choose the requested page ==> then choose response
to make it visible on the screen you need to go to java script file of the front end and put an call back function with response which is the html page such like so
.then(res => {
document.open()
res.text().then(function(text) {
document.write(text)
});
})
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