Cypress not opens the app running on localhost

[dubakur]

We are working on project which uses Nx Monorepo react app. When we try to run the cypress against localhost it throws network error.It receives error ECONNREFUSED 127.0.0.1:4202 at network level when it runs cy.visit(). How I can I fix this.Please throw some ideas?

Localhost is running on the port 4202.I could double check in different browser instance but on the the browser instance in which cypress is running localhost is not working properly.Also, I can run the cypress against different url like www.cypress.io or google.com.The issue happens only when connecting to localhost.