Network error for emulator 4.x


I am having network error while fetching data on Emulator 4.X whereas the same codebase works smoothly on Emulator 5.X without network error.
I am getting an error


in the Chrome console when fetching some data from my API using emulator 4.x

Please suggest

The webOS TV has a list of trusted root certificates that varies by webOS TV platform version. For example, the Let’s Encrypt certificate, which uses ISRG Root X1 as root, is supported from webOS TV 5.0. Please make sure all resources in your app are using the proper certificate and try again. Thank you.