chatterbot error

[elieem7]

i was working in a small chat bot project and i installed every packages and library but i have still getting an error.
this is my code:
from chatterbot import ChatBot
from chatterbot.trainers import ListTrainer
from sqlalchemy import create_engine

bot=ChatBot("Charly",read_only= False,logic_adapters=["chatterbot.logic.BestMatch"])

list_to_train=[
"hello",
"how are you?",
"i am fine and you",
"just fine thanks"
]

list_trainer=ListTrainer(bot)
list_trainer.train(list_to_train)

Créer un moteur sans l'argument convert_unicode

engine = create_engine('sqlite:///your_database.db')

this is the error that i still getting : TypeError: Invalid argument(s) 'convert_unicode' sent to create_engine(), using configuration SQLiteDialect_pysqlite/QueuePool/Engine. Please check that the keyword arguments are appropriate for this combination of components.

[frozenproof]

You are supposed to use a virtual environment with python 3.7 specifically , this is due to the fact this library is virtually dead , and the packages are too upgraded to run this .