How did you install WeeWX; using setup.py or as a package using apt or dpkg? The command you are using assumes a setup.py install, if you have a package install you need to use:
PYTHONPATH=/usr/share/weewx python -m user.gw1000 --test-driver
Also, to make life easier for us (and to help you get the help you need), could you please post console output as text rather than as an image. Text is far easier to read, especially on mobile devices.
Gary