title: I am getting this keyerror: 'groups' when trying to fetch nearby venues using Foursquare API
body: <p>Hi I am getting <code>keyerror: 'groups'</code> when trying to fetch nearby venues using Foursquare API. Following is my code:</p>
  
  <pre><code>LIMIT = 100 # limit of number of venues returned by Foursquare API
  
  
  radius = 500 # define radius
  
  venues_list = []
  
  for lat, long, post, borough, neighborhood, hospital in zip(hospital_df['Latitude'], hospital_df['Longitude'], hospital_df['Pincode'], hospital_df['District'], hospital_df['Location'], hospital_df['Hospital_Name']):
      print(neighborhood)
      print(borough)
      url = "https://api.foursquare.com/v2/venues/explore?client_id={}&amp;client_secret={}&amp;v= 
      {}&amp;ll={},{}&amp;radius={}&amp;limit={}".format(
          CLIENT_ID,
          CLIENT_SECRET,
          VERSION,
          lat,
          long,
          radius, 
          LIMIT)
      results = requests.get(url).json()["response"]['groups'][0]['items']
      venues_list.append([(
              post, 
              borough,
              neighborhood,
              hospital,
              lat, 
              lng, 
              v['venue']['name'], 
              v['venue']['location']['lat'], 
              v['venue']['location']['lng'],  
              v['venue']['categories'][0]['name']) for v in results])
  
  nearby_venues = pd.DataFrame([item for venue_list in venues_list for item in venue_list])
  nearby_venues.columns = ['PostalCode', 'Borough', 'Neighborhood', 'Hospital', 'Neighborhood_Latitude', 'Neighborhood_Longitude', 'VenueName', 'VenueLatitude', 'VenueLongitude', 'VenueCategory']
  </code></pre>
  
  <p>I keep getting the following error:</p>
  
  <blockquote>
    <p>KeyError: 'groups'</p>
  </blockquote>