JSONP cross-domain GET200 but still report an error, directly into the error handler?

the code is as follows:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Ajaxjson</title>
    <script type="text/javascript" src="jquery-3.3.1.js"></script>
</head>
<body>
    <button id="btn">ajax</button>

    <script type="text/javascript">

        $("-sharpbtn").click(function() {
            $.ajax({
               type : "get",
               async: false,
               url : "http://yunxtec.com/test/adlist.json",
               dataType: "jsonp",
               jsonp:"callback",
               success : function(data) {
                       alert(data[0][1]);
               },
               error : function(r) {
                       alert("fail");
               }
           });
        })
    </script>
</body>
</html>

Screenshot of error message is as follows:

GET200

could you tell me what went wrong? Ask for advice

Mar.14,2021

the data that should be returned is not strict. Json,network can see the data, but you can't get it

.
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