This fixes the build error: ``` ERROR: _exec_cmd: cp /usr/share/efibootguard/efibootguardx64.efi /tmp/tmp.1Y4utA1zC2/sentron-product-sentron-sentron.wic/tmp.wic.ampnawp6/bootx64.efi returned '1' instead of 0 output: cp: cannot stat '/usr/share/efibootguard/efibootguardx64.efi': No such file or directory ```