Place_order issues

[gsilva4u]

It looks like everything is okay except that I get this particular error and I have tried several time to fix it. Could you please me identify and solve this issue?

in execute_orders
order_dict = self.session.place_order(
"C:\site-packages\td\client.py", line 1925, in place_order
return self._make_request(method='post', endpoint=endpoint, mode='json', json=order, order_details=True)
"C:\lib\site-packages\td\client.py", line 617, in _make_request
raise NotNulError(message=response.text)
td.exceptions.NotNulError: {"error" : "A validation error occurred while processing the request."}

Thank you!