.obj files not sending xhr post

Question

I have a jquery code where I send files with xhr post, this code works fine for other files but for files with ".obj" extension it doesn't send any value in post (it doesn't send test data independent of the file either)

When I print the file value to the console, I can see that it is written correctly

Code;

var form = new FormData();
form.append("file", file);
form.append("test", "test");

var xhr = new XMLHttpRequest();
xhr.open("POST", "desk.php", true);
xhr.onload = function ()
{
    if (xhr.status == 200)
    {
        var response = JSON.parse(xhr.responseText);
        console.log(response);
    }

};
xhr.send(form);