Laravel Return Response JSON Error Message on Ajax

//Controller

try {
    //YOUR CODE HERE...

    return response()->json(['message'=>'Success!']);
} catch (\Exception $e) {
    return response()->json(['message' => $e->getMessage()], 500);
}

//HTML

$.ajax({
    type:'POST',
    url:'/thisurl',
    data:{name:name},
    success:function(data){
        //Swal.close();
        alert(data.message);
    },
    error:function(XMLHttpRequest) {
        if (XMLHttpRequest.readyState == 0) {
            alert('Network error (i.e. connection refused, access denied due to CORS, etc.)');
            //Swal.fire({
            //    icon: 'error',
            //    title: 'Oops...',
            //    text: 'Network error (i.e. connection refused, access denied due to CORS, etc.)'
            //});
        } else {
            //can be checked by XMLHttpRequest.status and XMLHttpRequest.statusText
            alert(XMLHttpRequest.responseJSON.message);
            //Swal.fire({
            //    icon: 'error',
            //    title: 'Oops...',
            //    text: XMLHttpRequest.responseJSON.message
            //});
        }
    }
});