Syntax error at line 185
Syntax errors are detected in generated GRUB config file.
Ensure that there are no errors in /etc/default/grub
and /etc/grub.d/* files or please file a bug report with
/boot/grub/grub.cfg.new file attached.
run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 1
dpkg: error processing package linux-image-5.3.0-18-generic (--configure):
 installed linux-image-5.3.0-18-generic package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 friendly-recovery
 grub-efi-amd64
 grub-efi
 grub-efi-amd64-signed
 shim-signed
 linux-image-5.3.0-18-generic