Ajax concatenate query

@pippuccio76

Use the browser development tools to see the response itself, especially the returned HTTP status code. Probably it is not 200, this is is why you see the message "Chiamata fallita, si prega di riprovare...".

If it is 404 - there is a problem about routing;
if it is 500 - there is an error within code - see the response body, the error would be echoed there.

403 (Forbidden)