Old project not starting, no errors

Hey!

I’m going back to meteor, and firing up an old project. I updated it with meteor update. And i run it

=> Started proxy.                             
=> Started MongoDB.                           
=> Started your app.                          

=> App running at: http://localhost:3000/

Everything looks fine, no errors. But localhost:3000 shows “Cannot GET /”

No errors in web console either. What can i do?

Worked with another port. Sorry for unnecessary post. Might help someone else in the future though.
Have a nice day