File is not being saved to the folder specified with php

Question

I am trying to upload an ajax and php image, the name generated in php is saved as normal in the database but the file itself is not saved/moved to the "upload" folder within my project. Does not display any kind of error message.

If I give a var_dump($_FILES['file']['tmp_name'], $diretorio.$novo_nome); for example it prints

string(14) "/tmp/phpYoKhfM" string(43) "upload/47ebbe8e65ea9963b7480838fb34f1d6.jpg"

When checking the folder that locates in the project root there is nothing inside. I need some guidance on this.

<form method="POST" enctype="multipart/form-data" id="formulario">
   <input name="cpf" type="text" placeholder="CPF" id="cpf" readonly>
   <input type="password" name="senha" id="senha" placeholder="Nova senha">
   <input type="file" name="file" id="file">
   <input type="hidden" name="id">

   <input type="submit" value="Atualizar" id="nova-senha">
</form>

File that inserts the fields into the database and moves the image to the upload folder

try{
  //Pega a extensão do arquivo
  $extensao = strtolower(substr($_FILES['file']['name'], -4));

  //Gera o nome do arquivo
  $novo_nome= md5(time()) . $extensao;
  $diretorio = "upload/";

  move_uploaded_file($_FILES['file']['tmp_name'], $diretorio.$novo_nome);

  //Instancia o método para enviar o alguns valores
  $trocarSenha = new EsqueciSenha();
  $teste = $trocarSenha->alterarSenha($_POST['senha'], $_POST['id'], $novo_nome);
  echo json_encode($teste);
}
} catch (Exception $e) {
   echo "Erro";
}