Signing a JWT?

I also tried this guy’s solution Using Joken to validate Google JWTs - #12 by vinagrito1

but what i am getting is false instead of true:

{false,
 %JOSE.JWT{
   fields: %{
      # ...
   }
 },
 %JOSE.JWS{
   alg: {:jose_jws_alg_rsa_pkcs1_v1_5, :RS256},
   b64: :undefined,
   fields: %{"typ" => "JWT"}
 }}

I have just created a new thread: How to verify RS256 JWT with Joken.Signer.verify/2 - 2022