Stuck loading in 0%

[yhhCh405]

I created new app in facebook and try to test helloworld sample through my app. I use this command

yarn run-mock --project hello-world with url https://www.facebook.com/embed/instantgames/GAME_ID/player?game_url=https://localhost:8000

. But the game stuck loading in 0% without showing any error.

[riojosdev]

Try running the https://localhost:8000 and verify the certificates. Then try again with the facebook URL.

Here is the part from the readme!

If the app shows stuck in 0% loading, make sure to visit https://localhost:8000 and follow the instructions on your browser trust the development certificates.