PokemonGo-Bot: Traceback (most recent call last) [ERROR]

fr1tz:PokemonGo-Bot/ (dev✗) $ python2 ./pokecli.py -a google -u username@gmail.com -p password -l "LOCATION"                                  [9:27:28]
Traceback (most recent call last):
  File "./pokecli.py", line 41, in <module>
    from bot import PokemonGoBot
  File "/home/fr1tz/PokemonGo-Bot/bot.py", line 8, in <module>
    from pgoapi import PGoApi
  File "/home/fr1tz/PokemonGo-Bot/src/pgoapi/pgoapi/__init__.py", line 17, in <module>
    raise PleaseInstallProtobufVersion3()
pgoapi.exceptions.PleaseInstallProtobufVersion3

I had a earlier build and it ran fine but I deleted it and cloned the newest build re ran pip install -r ./requirements.txt and it works fine but I get that error. Any suggestion?