Q:

jQueryUI / jQuery Resizable is not a function

I am trying to use jQuery UI in my MVC 5 project. But I continue to get this .resizable/Resizable is not a function. It is the same for all of jQueryUI functions.. It looks like it keeps trying to see if those function reside in jQuery 3.1.1 instead of jQueryUI?
What I am trying to achieve.
https://jsfiddle.net/vp1dwuv3/
Uncaught TypeError: $(...).resizeable() is not a function
    at HTMLDocument.<anonymous> (<anonymous>:2:22)
    at mightThrow (jquery-3.1.1.js:3570)
    at process (jquery-3.1.1.js:3638)

This is the  of my page when it loads.
<html>

<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Overview</title>
    <link href="/Content/bootstrap.css" rel="stylesheet" />
    <link href="/Content/site.css" rel="stylesheet" />

    <link href="/Content/themes/base/core.css" rel="stylesheet" />
    <link href="/Content/themes/base/resizable.css" rel="stylesheet" />
    <link href="/Content/themes/base/selectable.css" rel="stylesheet" />
    <link href="/Content/themes/base/accordion.css" rel="stylesheet" />
    <link href="/Content/themes/base/autocomplete.css" rel="stylesheet" />
    <link href="/Content/themes/base/button.css" rel="stylesheet" />
    <link href="/Content/themes/base/dialog.css" rel="stylesheet" />
    <link href="/Content/themes/base/slider.css" rel="stylesheet" />
    <link href="/Content/themes/base/tabs.css" rel="stylesheet" />
    <link href="/Content/themes/base/datepicker.css" rel="stylesheet" />
    <link href="/Content/themes/base/progressbar.css" rel="stylesheet" />
    <link href="/Content/themes/base/theme.css" rel="stylesheet" />

    <script src="/Scripts/modernizr-2.8.3.js"></script>

    <script src="/Scripts/jquery-3.1.1.js"></script>

    <script src="/Scripts/jquery-ui-1.12.1.js"></script>

    <script src="/Scripts/bootstrap.js"></script>
    <script src="/Scripts/respond.js"></script>

</head>

A:

It is the same for all of jQueryUI functions.. It looks like it keeps trying to see if those function reside in jQuery 3.1.1 instead of jQueryUI

It means that the jquery ui files are not getting loaded, and as discussed in comments
So check if the path is correct, or the filename is proper, or the file exists at the said path.

