Getting error "Error: Connection refused" if I try to test the example app on simulator

[pranavkumark13]

Hi Team,

I am Pranav, new to open source development. I was getting started with the project. After making all the necessary configurations, if I run the example app, the app runs, but when I try to test the payment sheet or card payments, I get an error saying "Error: Connection refused" during the init process.