How to Fix 500 Internal Server Error: YouTube Video Not Loading in Funnel System

This video, https://www.youtube.com/watch?v=ZFzYbLdQP7k&index=3&t=0s&list=PLSjtLzqIlLSWTn1oZE6Fd9fi-C63fdeIM, can also be seen at https://www.youtube.com/playlist?list=PLSjtLzqIlLSWTn1oZE6Fd9fi-C63fdeIM.
See the rest of the story at http://www.huskywhiterose.com/2018/03/06/how-to-fix-500-internal-server-error-youtube-video-not-loading-in-funnel-system/