Get error just Importing library (via @require) in Tampermonkey

I want to import dragtable.js in my Tampermonkey script, but I am getting this error (jQuery is already in my website) :

[Error] ERROR: Execution of script 'DragTable' failed! undefined is not a function (near '...$.widget...') error (anonymous function) (userscript.html:2:186) ... ...

Here is my script:

// ==UserScript==
// @name         DragTable
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        http://localhost:9010/*
// @require https://rawgit.com/akottr/dragtable/master/jquery.dragtable.js

// @grant        none
// ==/UserScript==

How can I import it without the error? Tks

Solution

See dragtable's ReadMe, that library requires both jQuery and jQuery UI.

From the error listed, it seems that jQuery UI is not present.

So, your script should be, at a minimum:

// ==UserScript==
// @name        DragTable, getting started
// @match       http://localhost:9010/*
// @require     http://ajax.googleapis.com/ajax/libs/jqueryui/1.11.1/jquery-ui.min.js
// @require     https://rawgit.com/akottr/dragtable/master/jquery.dragtable.js
// @grant        none
// ==/UserScript==

But, see this other Q&A for a more details about jQuery UI in a userscript.