Script /push/Regional_markets/index.pih TypeError: 'NoneType' object is unsubscriptable Line 30     url=datamodule.get_county_url(citycode)

Traceback (most recent call last):
  File "/home/zc/Karrigell-SN/core/k_script.py", line 144, in render
    self.run_script(ns)
  File "/home/zc/Karrigell-SN/core/k_script.py", line 177, in run_script
    exec self.pythonCode() in ns
  File "<string>", line 31, in <module>
  File "/home/zc/Karrigell-SN/webapps/push/datamodule.py", line 451, in get_county_url
    return all[0]
TypeError: 'NoneType' object is unsubscriptable