Thanks for the link to the cool video.

As to what your problem might be, I have few ideas. Do you have ad or tracker blockers running on your computer or network? If so, can you momentarily disable them to see if that fixes things? It's possible they are blocking an image or video link from time-to-time. For instance, I use Brave (which has built-in ad blocking), run pihole on a Raspberry Pi (again, ad blocking), and (on my phone) use DuckDuckGo's tracker blocker VPN. Maybe try a different web browser?