My application cannot read a 20mb txt file

I am writing an application for LG TV. The application that works on the simulator does not work on the TV. It cannot read a 20 MB txt formatted HTML file located on a server on the same network. When I reduce the file size to 1 MB, it reads. I don’t know what the problem is. Thank you to those who will help.
note: sorry for my bad english

Please check if it works on your mobile web browser. Thank you.

There is no problem in mobile browser. It immediately opens the html file with txt content in my 20 mb size.

Please share your sample app and the following information at developer@lge.com.

  • TV model name: (You can check this in the Settings > General > About This TV menu.)
  • TV software version:
  • webOS TV version: (You can check this in the About This TV > TV Information menu.)
  • Region: