is this not enough boot space on debian 13?

apparently my problem is I cannot update initramfs:

update-initramfs: Generating /boot/initrd.img-6.12.41+deb13-amd64 zstd: error 70 : Write error : cannot write block : No space left on device

After checking KDE Partition Manager for /boot and /boot/efi both have free space left:

/boot size: 488 MiB

/boot used: 396.26 MiB

/boot/efi size: 512 MiB

/boot/efi used: 10.52 MiB

dpkg -l | grep linux-image | awk '{print$2}' shows:

linux-image-6.1.0-37-amd64

linux-image-6.1.0-38-amd64

linux-image-6.12.41+deb13-amd64

linux-image-amd64

I am now using debian 13 on linux-image-6.1.0-38-amd64 because linux-image-6.12.41+deb13-amd64 won't load from grub2. I don't want to get rid of linux-image-6.1.0-37-amd64 till I solve this issue