Cross-Origin Read Blocking (CORB)?

Question

JavaScript

Good afternoon, I'm trying to connect frontpad.ru via API
The instruction itself link
The script itself JS

function sendfronpad() {
  var secret = '-------------'; 		//секрет авторизации
  var product = [];
  var product_kol = [];
 	{/literal}
        	{assign var="num" value="0"}
        	{foreach $purchases as $purchase} 	
 	product[{$num}] = '{$purchase->sku}'; 	//массив внешних кодов товаров				
  product_kol[{$num}] = '{$purchase->amount}'; 	//массив кол-ва товаров 
        	{assign var="num" value=$num+1}
 		{/foreach} 	
 	var street = '{$address|escape}'; 		//улица
        var name = '{$name|escape}';
 	var phone = '{$phone|escape}';  		//телефон
 	var descr = '{$comment|escape}{literal}'; 	//примечание
  $.post("https://app.frontpad.ru/api/index.php?new_order", {
    secret:secret,
    'product[]':product,
    'product_kol[]':product_kol,
    street:street,
    phone:phone,
    descr:descr,
     	name:name
 	});
}

An error is given:

the site https://thesushi.by
Help me solve the problem, I encountered such a problem for the first time....

Answer 1

$.post("https://app.frontpad.ru/api/index.php?new_order", {
  contentType: 'application/json',
  crossDomain: true,
  // ...
});

Answer 2

learn materiel - https://lmgtfy.com/?q=MDN+CORS

Answer 3

Read about CORS Wikipedia
I also encountered such a problem, since I don’t have a backend, so I got out of the situation this way: I used a CORS proxy, using JQuery as an example.

$.ajax({
  type:'POST',
  url: 'https://cors-anywhere.herokuapp.com/http://************.ru/api/',
  data: { 
    query: '{"ask":"'+message+'","userid":'+id+',"key":"1"}'
  },
  success: function(data){
    msg = JSON.parse(data);
    $(".messages").append('<li><div class="text-msg receive_msg">'+msg['aiml']+'</div></li>');
    while($(".messages li").length > 7){
      $('li:first').detach();
    }
  }
});