title: Troubelshooting raise TypeError("quote_from_bytes() expected bytes")
body: <p>I have an error raised by the following piece of code</p>
  
  <pre><code>    def __to_canonical_querystring_post(self, params):
      canonical_querystring = ""
      # parameters have to be sorted alphabetically for the signing part
      for param_key, param_value in sorted(params.items()):
          if canonical_querystring != "":
              canonical_querystring += "&amp;"
          canonical_querystring += param_key + "=" + urllib.parse.quote(param_value)
      return canonical_querystring
  </code></pre>
  
  <p>The params are 
   Make_Payment_params = {
      "debitAccountNumber": 12003189487,
      "creditAccountNumber": 12065812627,
      "amount": 100,
      "requestedExecutionDate": "2019-03-09"
  }</p>
  
  <p>and the error is   raise TypeError("quote_from_bytes() expected bytes")
  TypeError: quote_from_bytes() expected bytes</p>
  
  <p>Help is much appreciated</p>