fstab not set correctly for some unknown reason

[AGG2017]

I followed exactly the steps using the automatic setup with the script. It ended without any issues and after the reboot I had immediately the samba working as expected. But from the printer there was nothing. I set debug mode for the logger in the python script and everything looked good. When I checked the /etc/fstab I could see some strange about 80 symbols like ^@ before the mount entry and when I did sudo mount -a it showed syntax error on line 4.
After edit the fstab manually by removing the leading bad characters everything started working as expected.
I cannot find any problem in the script but wanted to let you know about this strange behavior in case of somebody else having the same issue. I'm using a brand new raspberry pi zero w with a fresh copy of 2023-12-05-raspios-bullseye-armhf-lite.img.xz

Thanks for the useful tool! I had hard time to find a way to transfer files to my new AC Kobra 2 Pro.
I had an old Toshiba flashair sd card which was doing similar function but for some reason it worked very unstable in this printer.