Testing with CodeceptJS, what's the problem?

Question

JavaScript

Hello! Please tell me who knows how to solve the problem with CodeceptJS tests?
I got a project on react in which there are such tests and you need to somehow make them work)
The task is to test the routing.
Error at the moment

Test routing
       test accepts:
     [Wrapped Error] {"message":"navigation error","code":-102,"details":"ERR_CONNECTION_REFUSED","url":"http://localhost:3000/ror"}

The test itself

Feature('Test routing');

Scenario('test accepts',  (I) => {
  I.amOnPage('/ror');
  I.seeCurrentUrlEquals('/ror');
});

What else needs to be added?
Never worked with it, I will be grateful for the help!
Thank you!