Can't save objects to xero.

I try to do this

contacts = xero_client.contacts.all()
for contact in contacts:
    if contact.get("Name") == supplier_name:
        contact["Addresses"][0]["City"] = "Manhattan"
        xero_client.contacts.save(contact)

# HERE I am trying to mark the invoice as paid.
invoices = xero_client.invoices.get(invoice_number)
for invoice in invoices:
    if invoice.get("Contact").get("Name") == supplier_name:
        invoice["Status"] = "PAID"
        xero_client.invoices.save(invoice)        

but it’s throwing this error in both cases.

  xero_client.contacts.save(contact)
  File "/Library/Python/2.7/site-packages/xero/manager.py", line 187, in wrapper
    raise XeroBadRequest(response)
  File "/Library/Python/2.7/site-packages/xero/exceptions.py", line 24, in __init__
    for elem in data['Elements']
    KeyError: 'Elements'

can someone please help me solve this.

[aidanlister]

If someone makes a PR I’ll merge it

[peircej]

There’s actually a further issue with (at least one of) the date fields because when the above issue was fixed the API then complained about the date being in the wrong format. Re-saving the datetime to a simple date (in my script not in pyxero) fixed that problem