error when try to execute python2 /opt/twitter-rss/server.py

[el3ctron]

Traceback (most recent call last):
File "/opt/twitter-rss/server.py", line 43, in
parsed_url = urlparse.urlparse(config.get('server.url'))
File "/usr/lib/python2.7/urlparse.py", line 143, in urlparse
tuple = urlsplit(url, scheme, allow_fragments)
File "/usr/lib/python2.7/urlparse.py", line 182, in urlsplit
i = url.find(':')
AttributeError: 'NoneType' object has no attribute 'find'