[Solved]-Why am I getting a 403 error when running Locust?

To expand on ZacDelagrange’s answer, when you are using https, you must also set the Referer header, so in this example you could do

def on_start(self):
    """ Run on start for every Locust hatched """
    r = self.client.get('')
    self.client.headers['Referer'] = self.client.base_url
    self.client.post('/accounts/login/', 
        {'email': 'email', 'password': 'password',
         'csrfmiddlewaretoken': r.cookies['csrftoken']})

Do a get on your root or login page, grab the csrf token from the response cookie, and post to your login url with the csrftoken. This should add the csrf token to the client’s cookies and allow you to browse the page.

def on_start(self):
    """ Run on start for every Locust hatched """
    r = self.client.get('')
    self.client.post('/accounts/login/', 
        {'email': 'email', 'password': 'password',
         'csrfmiddlewaretoken': r.cookies['csrftoken']})