Dependencies python3 are not installed, unclear errors are pouring in?

Question

Python

Gave a project where quite a lot of dependencies are installed. Project in python3. By default, python2
installed python3 additionally, I created a virtual environment with the command

python3 -m venv ProjectName
workon ProjectName
python --version

pip install -r requirements.txt

what could be the error despite the fact that there are no wheel and pycario packages inside requirements.txt