After publishing an asp.net mvc application on Azure, one of the methods is no longer available?

Question

JavaScript

There is an ASP.NET MVC application after deployment, one of the methods that was called by javascript is no longer available.

[HttpPost]
 public ActionResult Tiket(int seanceId, IEnumerable<long> ids)

request script

var request = new XMLHttpRequest();
        request.open('POST', '@Url.Action("Tiket")', true);
        request.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
        request.onreadystatechange = callback;
        request.send(JSON.stringify({ seanceId: '192', ids: array }));

data goes to the server like this

{
  seanceId:'192',
  ids: ['747', '757', '767']
}

here is the description of the exception: 502 - Web server received an invalid response while acting as a gateway or proxy server
Forgot to add that locally all this code works without problems

Answer 1

Where after deployment?
Have you looked at fiddler to see what's going on?
ARR are you using?
If the website, is it in Free mode?