Asp.net MVC errors when run autocomplete ?

jquery-1.5.min.js:16 Uncaught TypeError: Cannot read properties of undefined (reading 'length')
    at Function.each (jquery-1.5.min.js:16:10613)
    at t.widget (jquery-ui.min.js:6:4729)
    at jquery-ui.min.js:7:13824
    at jquery-ui.min.js:6:73
    at jquery-ui.min.js:6:84
bootstrap.js:15 Uncaught Error: Bootstrap's JavaScript requires jQuery version 1.9.1 or higher, but lower than version 4
    at bootstrap.js:15:11
    at bootstrap.js:17:2
datatables.min.js:176 Uncaught TypeError: l(...).on is not a function
    at datatables.min.js:176:457
    at datatables.min.js:60:299
    at datatables.min.js:60:326
jquery.validate.unobtrusive.js:156 Uncaught TypeError: $form.off is not a function
    at Object.attachValidation (jquery.validate.unobtrusive.js:156:26)
    at HTMLFormElement.<anonymous> (jquery.validate.unobtrusive.js:249:26)
    at Function.each (jquery-1.5.min.js:16:10828)
    at init.each (jquery-1.5.min.js:16:7403)
    at Object.parse (jquery.validate.unobtrusive.js:246:20)
    at HTMLDocument.<anonymous> (jquery.validate.unobtrusive.js:428:28)
    at Object.resolveWith (jquery-1.5.min.js:16:12509)
    at Function.ready (jquery-1.5.min.js:16:8628)
    at HTMLDocument.A (jquery-1.5.min.js:16:14342)
RequesterIndex?filenumber=103085:351 Uncaught ReferenceError: searchText is not defined
    at HTMLInputElement.<anonymous> (RequesterIndex?filenumber=103085:351:41)
    at HTMLInputElement.handle (jquery-1.5.min.js:16:28630)
    at HTMLInputElement.l (jquery-1.5.min.js:16:25280)

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
    <link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.9/themes/base/jquery-ui.css" type="text/css" media="all" />
    <script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.5.min.js" type="text/javascript"></script>
    <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.9/jquery-ui.min.js" type="text/javascript"></script>
    <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.min.js"></script>
<script>
    //--work success----
    @*$(document).ready(function () {
        $("#txtLineManagerId").change(function () {
            var searchText = $("#txtLineManagerId").val();
            console.log("search text" + searchText)
            $.ajax({
                url: '@Url.Action("GetAllEmployeeBasedSearchText", "Resignation")',
                data: { searchText: searchText},
                method: "GET",
                dataType: "json",
                success: function (data) {
                    /* console.log("data is " + data);*/
                    response($.map(data, function (item) {
                        return { label: item.EmployeeID, value: item.EmployeeID };
                    }))

                }
            });
      });
    });*@
    $(document).ready(function () {
        $("#txtLineManagerId").autocomplete({
            source: function (request, response) {
                var searchText = $("#txtLineManagerId").val();
                console.log("search text" + searchText)
                $.ajax({
                    url: '@Url.Action("GetAllEmployeeBasedSearchText", "Resignation")',
                    data: { searchText: searchText },
                    method: "GET",
                    dataType: "json",
                    success: function (data) {
                        /* console.log("data is " + data);*/
                        response($.map(data, function (item) {
                            console.log("data is" + item.EmployeeID);
                            return { label: item.EmployeeID, value: item.EmployeeID };
                        }))
                    }
                });
            }
        });
   /* });*/