State not included in redirect token (error: "State in the token does not match the /continue state")

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2

This person got the same error:

Though they did not add what code was missing. I have tried adding a state to the session_token as such:

const session_token = api.redirect.encodeToken({
        secret: event.secrets.REDIRECT_SECRET,
        expiresInSeconds: 60, 
        payload: {
          sub: event.user.user_id,
          email: event.user.email,
          continue_uri: `https://${AUTH0_DOMAIN}/continue`,
          state: "abc123"
        },
      });

But obviously it is not a valid state, because it was not generated by Auth0 and does not match the /continue state wanted.

I have also tried to exchange the state from abc123 to state: event.transaction?.state but that is also not the correct state to add. The state from the URI is something long like this: hKFo2SBRNklVMFVPM2FkODh4ZUs4bGhwOWVyUEQtSW5nRTl2NKFuqHJlZGlyZWN0o3RpZNkgNnpzSXdMbzNkRGZluy0tdkowbm5nSG5BM2t5aTdSRkujY2lk2SBFNmdEV3ZmUVlIYmpPT3h3RDM5bk1pNlIzSklVcTQwMg whereas the state from the transaction is something short like this: S2NpVk1NU1JlbWFwMWxfY05vbnJIQmphMkNMVAZFcGt4UDNzMHJ5TUxibA==.

I get either the first error that it is a mismatch, or that the configuration is wrong.