"no such file" trying to create the modified iso

[languagemaniac]

Got these errors while trying to create a ubuntu 22.04.4 unattended iso. Doesn't create the iso. Maybe ubuntu 22 is not supported?

edit: It probably IS because it's not supported. I created an unattended iso from ubuntu 18.04. I'll just install that and do a dist-upgrade.

edit2: I tried installing on VM and it does ask questions (select language, keyboard distritbution, etc.) so it's not really unattended... Am I doing anything wrong? Just executed the thing, selected ubuntu, answered the questions and it created this unattended iso...

create-unattended-iso.sh: line 217: /root/iso_new/isolinux/lang: No such file or directory
sed: can't read /root/iso_new/isolinux/isolinux.cfg: No such file or directory
cp: cannot create regular file '/root/iso_new/preseed/netson.seed': No such file or directory
create-unattended-iso.sh: line 235: /root/iso_new/preseed/netson.seed: No such file or directory
sed: can't read /root/iso_new/preseed/netson.seed: No such file or directory
sed: can't read /root/iso_new/preseed/netson.seed: No such file or directory
sed: can't read /root/iso_new/preseed/netson.seed: No such file or directory
sed: can't read /root/iso_new/preseed/netson.seed: No such file or directory
md5sum: /root/iso_new/preseed/netson.seed: No such file or directory
sed: can't read /root/iso_new/isolinux/txt.cfg: No such file or directory
 creating the remastered iso
create-unattended-iso.sh: line 268: isohybrid: command not found
 -----
 finished remastering your ubuntu iso file```