Unable to get username, invalid oauth token!

[mountin]

Hello,
Your product is very interestings, but i cant run it unfortunately..
I installed like in instruction and put working credentials... in config file

Could you help me with these errors?

root@precise32:/var/www/html/twitter-manage.loc/python/bots/twitterbot/examples/echobot# python echobot.py
Traceback (most recent call last):
File "echobot.py", line 127, in
bot = EchoBot()
File "/usr/local/lib/python2.7/dist-packages/twitterbot/bot.py", line 67, in init
self.id = self.api.me().id
File "/usr/lib/python2.7/dist-packages/tweepy/api.py", line 175, in me
return self.get_user(screen_name=self.auth.get_username())
File "/usr/lib/python2.7/dist-packages/tweepy/auth.py", line 161, in get_username
raise TweepError("Unable to get username, invalid oauth token!")
tweepy.error.TweepError: Unable to get username, invalid oauth token!
root@precise32:/var/www/html/twitter-manage.loc/python/bots/twitterbot/examples/echobot#