aws-node-auth0-custom-authorizers-api Private API returned 401

I tried running aws-node-auth0-custom-authorizers-api. It logins successfully, public API is called successfully. But private API returns 401 with following error:

I had make a few changes also:

1. Add algorithms: ["HS256"] to options passed to jwt.verify().
2. Change AUTH0_CLIENT_PUBLIC_KEY to new Buffer(AUTH0_CLIENT_PUBLIC_KEY, "base64") when passing to jwt.verify().

verifyError { JsonWebTokenError: invalid signature
at /var/task/node_modules/jsonwebtoken/verify.js:133:19
at getSecret (/var/task/node_modules/jsonwebtoken/verify.js:90:14)
at Object.module.exports [as verify] (/var/task/node_modules/jsonwebtoken/verify.js:94:10)
at module.exports.auth (/var/task/handler.js:45:9) name: 'JsonWebTokenError', message: 'invalid signature' }

I am using serve for hosting frontend locally. FE is live on http://localhost:5000/

Any suggestions?

Start with handler.js around line 45, where the stack trace shows jwt.verify() failing, and compare the token and verification configuration used by the public and private API paths. Reproduce the example with the documented local frontend setup and inspect the authorizer logs. Done means a valid login token is accepted by the private API without the invalid-signature 401.