TypeError: newRefreshTokenArray is not iterable

[dsclassen]

Hello. I am trying to manually test the auth route (http://localhost:3500/auth) using Thunder Client. and I'm getting the following error:

POST /auth
cookie available at login: {}
/refresh_token_rotation/controllers/authController.js:67
        foundUser.refreshToken = [...newRefreshTokenArray, newRefreshToken];
                                     ^

TypeError: newRefreshTokenArray is not iterable
    at handleLogin (/refresh_token_rotation/controllers/authController.js:67:38)

Node.js v18.12.1
[nodemon] app crashed - waiting for file changes before starting...

It appears to be happening here:

        // Saving refreshToken with current user
        foundUser.refreshToken = [...newRefreshTokenArray, newRefreshToken];
        const result = await foundUser.save();
        console.log(result);
        console.log(roles);

[dsclassen]

Ahhh I see. I was testing with an old User model with:

refreshToken: String

which I needed to update to:

refreshToken: [String]

closing