Auth0 with Next.js App Router can not be tested using Cypress E2E Testing

[gripzyyy]

Checklist

• The issue can be reproduced in the nextjs-auth0 sample app (or N/A).
• I have looked into the Readme, Examples, and FAQ and have not found a suitable solution or answer.
• I have looked into the API documentation and have not found a suitable solution or answer.
• I have searched the issues and have not found a suitable solution or answer.
• I have searched the Auth0 Community forums and have not found a suitable solution or answer.
• I agree to the terms within the Auth0 Code of Conduct.

Description

Hello! For days now I have been trying to write Cypress E2E tests for my app that uses the Next.js 14 App Router and auth0. I have followed this guide: https://docs.cypress.io/guides/end-to-end-testing/auth0-authentication
I searched everywhere for an example on how to use Next.js App Router + Auth0 + Cypress for testing and have yet to be successful.
The test will only run up to the point where the "Continue" button on the auth0 login page is pressed, then I will get ERR_CALLBACK_HANDLER_FAILURE and the tests will not route back to my application.

Reproduction

1. Clone this repository I have created with the issue: https://github.com/gripzyyy/Auth0-Cypress-Next-App-Router
2. npm install
3. npm run cypress:open
4. Run the test and see authentication failing to route back to the application and throwing.

Additional context

No response

nextjs-auth0 version

3.5.0

Next.js version

14.1.3

Node.js version

20.9.0