Running the Patch openSUSE-2020-401 from the KDE Update Plasma - PackageKit -
results in the following errors being noted in the Zypper history:

# 2020-03-29 15:26:07 Output of grub2-i386-pc-2.02-lp151.21.12.1.noarch.rpm
%posttrans script:
#     update-bootloader: 2020-03-29 15:26:04 <3> update-bootloader-6892
run_command.294: '/usr/lib/bootloader/grub2-efi/
install' failed with exit code 127, output:
#     <<<<<<<<<<<<<<<<
#     target = x86_64-efi
#     + /usr/sbin/shim-install --config-file=/boot/grub2/grub.cfg
#     copying /usr/lib64/efi/grub.efi to /boot/efi/EFI/opensuse/grub.efi
#     x86_64-efi wird f374r Ihre Plattform installiert.
#     installation beendet. Keine Fehler aufgetreten.
#     /usr/sbin/shim-install: Zeile 326: efibootmgr: Kommando nicht gefunden.
#     /usr/sbin/shim-install: Zeile 352: efibootmgr: Kommando nicht gefunden.
#     >>>>>>>>>>>>>>>>
#     update-bootloader: 2020-03-29 15:26:07 <3> update-bootloader-6892
run_command.294: '/usr/lib/bootloader/grub2-efi/config' failed with exit code
127, output:
#     <<<<<<<<<<<<<<<<
#     + /usr/sbin/grub2-mkconfig -o /boot/grub2/grub.cfg
#     Generating grub configuration file ...
#     Found theme: /boot/grub2/themes/openSUSE/theme.txt
#     Found linux image: /boot/vmlinuz-4.12.14-lp151.28.44-default
#     Found initrd image: /boot/initrd-4.12.14-lp151.28.44-default
#     Found linux image: /boot/vmlinuz-4.12.14-lp151.28.40-default
#     Found initrd image: /boot/initrd-4.12.14-lp151.28.40-default
#     Found linux image: /boot/vmlinuz-4.12.14-lp151.28.36-default
#     Found initrd image: /boot/initrd-4.12.14-lp151.28.36-default
#     /etc/grub.d/80_suse_btrfs_snapshot: Zeile 7: btrfs: Kommando nicht
gefunden.
#     >>>>>>>>>>>>>>>>