That is weird, since the output indicates that jsonpath_ng is already installed with an up-to-date version.
You can try forcing the reinstallation of that library with
pip3 install --force-reinstall jsonpath-ng
and see if anything changes…
Alternatively, you might have multiple versions of python in your system and in that case the best approach to force the right version of pip would be launching it through the default python3 interpreter:
python3 -m pip install -r requirements.txt