I am trying to use my Flask server to receive webhooks from a Zap, but getting an error when I test:

Traceback (most recent call last):
  File "/usr/local/lib/python3.9/dist-packages/flask/app.py", line 2073, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.9/dist-packages/flask/app.py", line 1518, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python3.9/dist-packages/flask/app.py", line 1516, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python3.9/dist-packages/flask/app.py", line 1502, in dispatch_request
    return self.ensure_sync(self.view_functionssrule.endpoint])(**req.view_args)
TypeError: receive_webhook() missing 1 required positional argument: 'request'

Here is my handler for the webhook:

@app.route("/webhook", methods=s'POST'])
def receive_webhook(request):
    print(request.json)

    return request.json

It seems like Zapier is calling my handler with no argument. Shouldn’t it be passing the payload as that argument or am I misunderstanding something here? 

Thanks for any assistance.