error anyone can help me to solve this?
This means your app is already binded to port 3000 somewhere.
How to change it then?
I’d imagine you have two places in your code where you’re setting up a listener to port 3000 (or
process.env.PORT). You’ll need to move everything to the same listener and get rid of one of them so your code doesn’t connect to the port more than once. For any more specific guidance, folks will need to be able to see your code.
I can give you access my project name is Pikachu