Preparing to unpack .../soundconverter_3.0.2-2_all.deb ...
Unpacking soundconverter (3.0.2-2) ...
Setting up grub-efi-amd64-signed (1.139+2.04-1ubuntu24) ...
/var/lib/dpkg/info/grub-efi-amd64-signed.postinst: 23: Syntax error: word unexpected (expecting ")")
dpkg: error processing package grub-efi-amd64-signed (--configure):
 installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 2
Setting up soundconverter (3.0.2-2) ...