ModuleNotFoundError: No module named 'csvstream'

[G10VA]

Good morning, I have the following issue: when I try to run the following code:

import random
import sys
sys.path.append('.\dqMM')
import numpy as np
import matplotlib.pyplot as plt
from tgym.gens.csvstream import CSVStreamer
from tqdm import tqdm 

I get the following error:
` 4 import numpy as np
5 import matplotlib.pyplot as plt
----> 6 from tgym.gens.csvstream import CSVStreamer
7 from tqdm import tqdm
8 #To ignore warnings that are annoying.

/usr/local/lib/python3.6/dist-packages/tgym/gens/init.py in
----> 1 from csvstream import *
2 from deterministic import *
3 from random import *

ModuleNotFoundError: No module named 'csvstream'`

I have already tried to modify the mentioned file with:
from tgym.gens.csvstream import *
but without results.
I use python 3.6 on ubuntu 18.04.
If you need any further details I'll be happy to provide them.
Thank you for your kind attention.