Error when launching web server -- HALP!

[tmnyhbs]

When I start espressoGUI in python, I receive the following 2 lines returned:

remi.server INFO Started websocket server 0.0.0.0:43979 remi.server INFO Started httpserver http://127.0.0.1:8081/

Once I go to access the site from a web browser, it returns the following:

Traceback (most recent call last):
  File "/home/pi/.local/lib/python2.7/site-packages/remi/server.py", line 809, in do_GET
    self.client.root = self.main(*self.server.userdata)
  File "espressoGUI.py", line 42, in main
    self.powerSwitch = gui.PrettySwitch('Power', False)
AttributeError: 'module' object has no attribute 'PrettySwitch'
remi.request     INFO     built UI (path=/)
remi.request     ERROR    error processing GET request
Traceback (most recent call last):
  File "/home/pi/.local/lib/python2.7/site-packages/remi/server.py", line 809, in do_GET
    self.client.root = self.main(*self.server.userdata)
  File "espressoGUI.py", line 42, in main
    self.powerSwitch = gui.PrettySwitch('Power', False)
AttributeError: 'module' object has no attribute 'PrettySwitch'
remi.request     INFO     built UI (path=/)
remi.request     ERROR    error processing GET request
Traceback (most recent call last):
  File "/home/pi/.local/lib/python2.7/site-packages/remi/server.py", line 809, in do_GET
    self.client.root = self.main(*self.server.userdata)
  File "espressoGUI.py", line 42, in main
    self.powerSwitch = gui.PrettySwitch('Power', False)
AttributeError: 'module' object has no attribute 'PrettySwitch'
^Cremi.server      INFO     *** signal 2 received.
remi.server      DEBUG     ** serve_forever() quitting
remi.update      DEBUG    stopped update thread

Any tips for what the cause may be?

Regards,