Error: Expected "payload" to be a plain object.

[ggmartins]

UnhandledPromiseRejectionWarning: Error: Expected "payload" to be a plain object.
...
02/exercises/udacity-c2-restapi/src/controllers/v0/users/routes/auth.router.ts:31:16)

function generateJWT(user: User): string {
    //@TODO Use jwt to create a new JWT Payload containing
    return jwt.sign(user.toJSON(), config.jwt.secret); //toJSON is required 
}

https://stackoverflow.com/questions/47117709/payload-error-in-jsonwebtoken
This was required after npm audit fix for the rest backend. I don't know about the original code. Please advise if I can send a PL please, thanks, G.

[SudKul]

Fixed in this commit
916b6f4