I got Same Issue like this
Cypress Error
The following error originated from your application code,
not from Cypress. >
Cannot read properties of null (reading 'textContent')
When Cypress detects uncaught errors originating from
your application it will automatically fail the current test.
This behavior is configurable, and you can choose to turn this off by
listening to the uncaught:exception event.Learn more
No Need to worry about this.
Just paste this code to your index.js file :)
import './commands'
Cypress.on('uncaught:exception', (err, runnable) => {
// returning false here prevents Cypress from
// failing the test
return false
})