pinetab build appears to be broken

[thatcher-gaming]

Hiya,
I'm trying to flash SailfishOS onto my (non-devkit) Pinetab using this here script, but for some reason it seems to break at this point:

Flashing rootFS...
mkdir: can't create directory './root': File exists
Archive:  pinetab-rootfs.zip
replace pinetab/sfe-pinetab-4.3.0.12-devel-20221012/Jolla-4.3.0.12-pinetab-aarch64.ks? [y]es, [n]o, [A]ll, [N]one, [r]ename: A
  inflating: pinetab/sfe-pinetab-4.3.0.12-devel-20221012/Jolla-4.3.0.12-pinetab-aarch64.ks  
ls: pinetab/*/*.tar.bz2: No such file or directory

tar: : Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
Copying kernel to boot partition...
mkdir: can't create directory './boot': File exists
Boot partition mount: ./boot
cp: can't stat './root/boot/*': No such file or directory
lost+found
Are you installing to an SD card? y
sed: ./root/etc/sailfish-device-encryption-community/devices.ini: No such file or directory
Clear root password? y
sed: ./root/etc/shadow: No such file or directory

I tried booting from the SD card anyways, and it did indeed not work.
Is there anything I can do to fix this?