Python version error on Raspberry Pi about inverter-connect

[GijsbertV]

I now tried running with the assert disabled as I was confident the version was high enough but then got the following error:

pi@raspberrypi:~/inverter-connect $ ./cli.py --help

• .venv-app/bin/pip-sync requirements.txt

Traceback (most recent call last):
File ".venv-app/bin/pip-sync", line 5, in
from piptools.scripts.sync import cli
File "/home/pi/inverter-connect/.venv-app/lib/python3.7/site-packages/piptools/scripts/sync.py", line 17, in
from .. import sync
File "/home/pi/inverter-connect/.venv-app/lib/python3.7/site-packages/piptools/sync.py", line 11, in
from pip._internal.commands.freeze import DEV_PKGS
ImportError: cannot import name 'DEV_PKGS' from 'pip._internal.commands.freeze' (/home/pi/inverter-connect/.venv-app/lib/python3.7/site-packages/pip/_internal/commands/freeze.py)
Traceback (most recent call last):
File "./cli.py", line 115, in
main(sys.argv)
File "./cli.py", line 101, in main
verbose_check_call(PIP_SYNC_PATH, str(DEP_LOCK_PATH))
File "./cli.py", line 81, in verbose_check_call
return subprocess.check_call(popen_args)
File "/usr/lib/python3.7/subprocess.py", line 347, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '(PosixPath('.venv-app/bin/pip-sync'), 'requirements.txt')' returned non-zero exit status 1.

[GijsbertV]

Apologies, I found out that although the python version was upgraded on the raspberry, the path was not properly defined to the new version. Once that was resolved all worked as expected.