Cypress error

Cypress could not verify that this server is running

Cypress can't reach the URL configured as baseUrl. The app server either isn't up yet or is on a different port.

Why this happens

`baseUrl` in cypress.config points at a server that hasn't started
The dev server is actually running on a different port than configured

How to fix it

Use `start-server-and-test` (or equivalent) to start the app and wait for it before running `cypress run`
Double-check `cypress.config.ts` baseUrl matches the dev server's real port