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.
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