Uncaught (in promise) FirebaseError: Expected type ‘wc’, but it was: a custom Vc object

The indicated error appears on line //line29, and I am not able to find the error within the code, can someone help me?
the code is to show the information of the registered users when it is searched through the cpf;

   const app = initializeApp(firebaseConfig);
   const db = getFirestore(app);

async function GetADocument(){
var Ref =  setDoc(db, 'cpf', pesquisa.value);
const docSnap  = await getDocs(Ref);

  if(docSnap.exists(cpf = pesquisa)){
    nome.value = docSnap.data().nome;
    endereco.value = docSnap.data().endereco;
    bairro.value = docSnap.data().bairro;
    cidade.value = docSnap.data().cidade;
    uf.value = docSnap.data().uf;
    cep.value = docSnap.data().cep;
    rg.value = docSnap.data().rg;
    cpf.value = docSnap.data().cpf;
    nascimento.value = docSnap.data().nascimento;
    tel.value = docSnap.data().tel;
    cel.value = docSnap.data().cel;
    titulo.value = docSnap.data().titulo;
    zona.value = docSnap.data().zona;
    secao.value = docSnap.data().secao;
    pai.value = docSnap.data().pai;
    mae.value = docSnap.data().mae;
  }
   else{
    alert("usuário não encontrado");
   }
} //line29

btnbuscar.addEventListener("click", GetADocument);