ImportError: cannot import name 'pub'

[opentheibm]

D:\Anaconda3\python.exe D:/mypython/mys/titan/titan_app.py
Traceback (most recent call last):
File "D:/mypython/mys/titan/titan_app.py", line 5, in
from core import titan_main
File "D:\mypython\mys\titan\core\titan_main.py", line 2, in
from strategies import poc_strategy
File "D:\mypython\mys\titan\strategies\poc_strategy.py", line 2, in
from strategies.base_strategy import BaseStrategy
File "D:\mypython\mys\titan\strategies\base_strategy.py", line 1, in
from core.markets import market_watcher
File "D:\mypython\mys\titan\core\markets\market_watcher.py", line 5, in
from core.markets import ticker
File "D:\mypython\mys\titan\core\markets\ticker.py", line 2, in
from pubsub import pub
ImportError: cannot import name 'pub'

[sdmr]

If you do pip install pypubsub which will resolve the issue