Comment 19 for bug 1969353

Hi!
I've got (I think) the same problem here:

$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages will be REMOVED:
  linux-image-5.13.0-39-generic
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 10,3 MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 223072 files and directories currently installed.)
Removing linux-image-5.13.0-39-generic (5.13.0-39.44) ...
/etc/kernel/postrm.d/initramfs-tools:
update-initramfs: Deleting /boot/initrd.img-5.13.0-39-generic
/etc/kernel/postrm.d/zz-update-grub:
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.15.0-27-generic
Found initrd image: /boot/initrd.img-5.15.0-27-generic
Found linux image: /boot/vmlinuz-5.13.0-40-generic
Found initrd image: /boot/initrd.img-5.13.0-40-generic
/etc/grub.d/10_linux_proxy: 3: /etc/grub.d/bin/grubcfg_proxy: not found
run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 127
dpkg: error processing package linux-image-5.13.0-39-generic (--remove):
 installed linux-image-5.13.0-39-generic package post-removal script subprocess returned error exit status 1
dpkg: too many errors, stopping
Errors were encountered while processing:
 linux-image-5.13.0-39-generic
Processing was halted because there were too many errors.
E: Sub-process /usr/bin/dpkg returned an error code (1)