Hi!
I did some research and it seems the bug is related to a system library, so a quick patch can be done manually. Open the file /usr/local/lib/python2.7/dist-packages/PyInstaller/depend/utils.py in a text editor or IDE and add this lines in code line 400:

    if m is None:
        continue

It should like the photo. Then run the zlogger command again and it should work.

Greetings!
Diego