Ubuntu под подсистемой Windows 10 Linux

Все, я новичок в Ubuntu. И я пытаюсь установить Ubuntu 18.04 под подсистему Windows Linux.

За один шаг я собираюсь установить libdvd-pkg , но получаю сообщение об ошибке, как показано ниже:

sudo apt-get install libdvd-pkg
[sudo] password for xyz:
Reading package lists... Done
Building dependency tree
Reading state information... Done
libdvd-pkg is already the newest version (1.4.2-1-1).
libdvd-pkg set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
7 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up libdvd-pkg (1.4.2-1-1) ...
libdvd-pkg: Checking orig.tar integrity...
/usr/src/libdvd-pkg/libdvdcss_1.4.2.orig.tar.bz2: OK
libdvd-pkg: Unpacking and configuring...
libdvd-pkg: Building the package... (it may take a while)
libdvd-pkg: Build log will be saved to /usr/src/libdvd-pkg/libdvdcss2_1.4.2-1~local_amd64.build
failed to set securebits to 024/0x14
dpkg: error processing package libdvd-pkg (--configure):
 installed libdvd-pkg package post-installation script subprocess returned error exit status 1
Setting up ruby-molinillo (0.6.4-1) ...
dpkg: unrecoverable fatal error, aborting:
 unable to install updated status of 'ruby-molinillo': No such file or directory
libdvd-pkg: Checking orig.tar integrity...
/usr/src/libdvd-pkg/libdvdcss_1.4.2.orig.tar.bz2: OK
libdvd-pkg: Unpacking and configuring...
libdvd-pkg: Building the package... (it may take a while)
libdvd-pkg: Build log will be saved to /usr/src/libdvd-pkg/libdvdcss2_1.4.2-1~local_amd64.build
failed to set securebits to 024/0x14
E: Sub-process /usr/bin/dpkg returned an error code (2)

Есть ли кто-нибудь, кто может это объяснить?