404 error on login

[OliverDudgeon]

I can't get this to work. I get a 404 from the login process when running a basic test.

I get this when running cypress.

``` 1) Logging in should login: Error: the object { "code": 404 "codeFrame": [undefined] "description": [null] "hasFailed": true "isPending": true "name": "Error" "original": "Error: Not Found" "parsedStack": [ { "message": "[object Object]" "whitespace": "" } { "message": "" "whitespace": "" } ] "sourceMappedStack": "[object Object]\n" "stack": "[object Object]\n" "statusCode": 404 "statusText": "Not Found" } was thrown, throw an Error :) at thrown2Error (http://localhost:3000/__cypress/runner/cypress_runner.js:126237:10) at Runner.fail (http://localhost:3000/__cypress/runner/cypress_runner.js:176863:25) at Test. (http://localhost:3000/__cypress/runner/cypress_runner.js:125910:18) at next (http://localhost:3000/__cypress/runner/cypress_runner.js:179093:24) at http://localhost:3000/__cypress/runner/cypress_runner.js:179122:13 at tryCatcher (http://localhost:3000/__cypress/runner/cypress_runner.js:13196:23) at Promise._settlePromiseFromHandler (http://localhost:3000/__cypress/runner/cypress_runner.js:11131:31) at Promise._settlePromise (http://localhost:3000/__cypress/runner/cypress_runner.js:11188:18) at Promise._settlePromise0 (http://localhost:3000/__cypress/runner/cypress_runner.js:11233:10) at Promise._settlePromises (http://localhost:3000/__cypress/runner/cypress_runner.js:11313:18) at Promise._fulfill (http://localhost:3000/__cypress/runner/cypress_runner.js:11257:18) at Promise._resolveCallback (http://localhost:3000/__cypress/runner/cypress_runner.js:11051:57) at Promise._settlePromiseFromHandler (http://localhost:3000/__cypress/runner/cypress_runner.js:11143:17) at Promise._settlePromise (http://localhost:3000/__cypress/runner/cypress_runner.js:11188:18) at Promise._settlePromise0 (http://localhost:3000/__cypress/runner/cypress_runner.js:11233:10) ```

In my app I don't specify the audience. It's optional in nextjs-auth0.

Here's the env vars that I have specified for nextjs-auth0 and these are mirrored in cypress.env.json

AUTH0_BASE_URL
AUTH0_ISSUER_BASE_URL
AUTH0_SECRET
AUTH0_CLIENT_ID
AUTH0_CLIENT_SECRET

Otherwise my setup is the same as in the readme.