Black screen on webOS TV versions 5.x or lower.

Hello!
I developed a web app using React that renders the content of a custom player. When I run it in the webOS_TV_24_Simulator, the app renders correctly.
However, when I test it in the LG webOS TV Emulator 5.0.0, it does not render anything — only a black screen appears.

I’ve already set the app compatibility to Chromium 38, but that didn’t solve the issue. What could be causing this?

You can debug your app with the Chrome Inspector. Please refer to Debug the app. Thank you.