Preparing to unpack .../libapt-inst2.0_1.2.18_amd64.deb ...
Unpacking libapt-inst2.0:amd64 (1.2.18) over (1.2.15ubuntu0.2) ...
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Unpacking apt-transport-https (1.2.18) over (1.2.15ubuntu0.2) ...
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Unpacking apt (1.2.18) over (1.2.15ubuntu0.2) ...
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Unpacking apt-utils (1.2.18) over (1.2.15ubuntu0.2) ...
Preparing to unpack .../libvncclient1_0.9.10+dfsg-3ubuntu0.16.04.1_amd64.deb ...
Unpacking libvncclient1:amd64 (0.9.10+dfsg-3ubuntu0.16.04.1) over (0.9.10+dfsg-3build1) ...
Processing triggers for libc-bin (2.23-0ubuntu5) ...
Processing triggers for man-db (2.7.5-1) ...
dpkg: error processing package libapt-pkg5.0:amd64 (--configure):
 package libapt-pkg5.0:amd64 is already installed and configured
Setting up libapt-inst2.0:amd64 (1.2.18) ...