human
Solve the following python programming problem given the following code:
@ patch ('bugsnag.notification.deliver') 
def test_bugsnag_middleware_respects_meta_data(self, deliver) : 
    class CrashAfterSettingMetaData (object) : 
        def __init__(self, environ, start_response) : 
            bugsnag.configure_request (meta_data = { 
                'account' : { 
                    'paying' : True, 
}, 
}) 
def __iter__(self) : 
            raise SentinelError ('oops') 
app = TestApp (BugsnagMiddleware (CrashAfterSettingMetaData)) 
    self.assertRaises (SentinelError, (lambda : app.get ('/beans'))) 
    self.assertEqual (payload.call_count, 1) 
    payload = deliver.call_args [0] [0] 
    event = payload ['events'] [0] 
    self.assertEqual (event ['metaData'] ['account'], { 
        'paying' : True, 
}) 

    
    

    Fix the buggy line: self.assertEqual (payload.call_count, 1)
assistant
#Here is Python code to fix the buggy line: self.

self.assertEqual (deliver.call_count, 1)