I am having an issue loading a video on my front page using SP Page Builder. It won't load, and when it does after a long wait, it displays the following issue:

504 Gateway Time-out The server didn't respond in time.

I have tried it with all of the other pages in SP Page Builder and they all seem to show with the bare minimum of modules, like none, but the pages do load. but the video pages not. I have turned on error reporting ( It remains on, ) but I get no error messages, only warnings that have nothing to do with SP Page Builder. Please assist ASAP.