Videos on my channel seem to fail half-way through "retrieving" them.

Hi! I've been having a bit of trouble getting my videos to play properly on my channel. It had worked just a week before, however out of nowhere, the videos started failing and wouldn't play. They appear to be retrieving to about half-way before just cutting back to the main screen. Below is my JSON file I'm using. As it's my first code, I'm unsure if it's something I messed up in the code, or if this is an issue I can resolve on Roku. Any help is greatly appreciated.

http://47.181.195.42:1881/SOI.json