Removing sessioninstaller (0.20+bzr150-0ubuntu4.1) ...
dpkg-deb: error while loading shared libraries: libzstd.so.1: cannot open shared object file: No such file or directory
dpkg: error processing archive /tmp/apt-dpkg-install-1Qdb18/0-appstream_0.12.0-3_amd64.deb (--unpack):
 dpkg-deb --control subprocess returned error exit status 127
dpkg-deb: error while loading shared libraries: libzstd.so.1: cannot open shared object file: No such file or directory
dpkg: error processing archive /tmp/apt-dpkg-install-1Qdb18/1-apt-config-icons_0.12.0-3_all.deb (--unpack):
 dpkg-deb --control subprocess returned error exit status 127
dpkg-deb: error while loading shared libraries: libzstd.so.1: cannot open shared object file: No such file or directory
dpkg: error processing archive /tmp/apt-dpkg-install-1Qdb18/2-gnome-software-common_3.28.1-0ubuntu4_all.deb (--unpack):
 dpkg-deb --control subprocess returned error exit status 127
dpkg-deb: error while loading shared libraries: libzstd.so.1: cannot open shared object file: No such file or directory
dpkg: error processing archive /tmp/apt-dpkg-install-1Qdb18/3-libgspell-1-common_1.6.1-1_all.deb (--unpack):
 dpkg-deb --control subprocess returned error exit status 127
dpkg-deb: error while loading shared libraries: libzstd.so.1: cannot open shared object file: No such file or directory
dpkg: error