Need some help for upgrade from 22.12.3.3

[fowfow]

Hi I m currently running on 22.12.3.3 and used to use the bluefin channel to update..
but the "auto update" seems not working to get to 22.12.4.1 and give me an error of

Error: [EFAULT] Command ['chroot', '/tmp/tmpal_l8dei', 'update-grub'] failed with exit code 2: /usr/sbin/grub-mkconfig: 3: /etc/default/grub.d/truenas.cfg: Bad substitution

I used to get something similar and I tried to use the manual update which pointing to 23.10 on this page.
however after I upload the .update file it gave me similar error

Error: [EFAULT] Command ['chroot', '/tmp/tmphe15tpi5', 'update-grub'] failed with exit code 2: /usr/sbin/grub-mkconfig: 4: /etc/default/grub.d/truenas.cfg: Bad substitution

then I tried to switch to Cobia channel that fetch 23.10 for me but same error with the manual update

Error: [EFAULT] Command ['chroot', '/tmp/tmpli_ltzed', 'update-grub'] failed with exit code 2: /usr/sbin/grub-mkconfig: 4: /etc/default/grub.d/truenas.cfg: Bad substitution