It's not work!

[huluohu]

sequence-diagram.js:792 Uncaught ReferenceError: Raphael is not defined
at sequence-diagram.js:792
at sequence-diagram.js:1468

[HelenZhangLP]

<script src="https://cdn.bootcdn.net/ajax/libs/lodash.js/4.17.20/lodash.core.min.js"></script> <script src="https://cdn.bootcdn.net/ajax/libs/raphael/2.3.0/raphael.min.js"></script>