Linux error fixing | E: Problem executing scripts APT | sudo apt-get install error fixing

linux error fixing
/var/cache/apt-show-versions/files: No such file or directory
can't create /var/cache/apt-show-versions/files: No such file or directory at /usr/bin/apt-show-versions line 196.
E: Problem executing scripts APT::Update::Post-Invoke-Success 'test -x /usr/bin/apt-show-versions || exit 0 ; apt-show-versions -i'
E: Sub-process returned an error code
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can't create /var/cache/apt-show-versions/files: No such file or directory at /usr/bin/apt-show-versions line 199.
E: Problem executing scripts APT::Update::Post-Invoke-Success 'test -x /usr/bin/apt-show-versions || exit 0 ; apt-show-versions -i
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W: Failed to fetch https://repo.varnish-cache.org/ubuntu/dists/trusty/varnish-4.0/binary-amd64/Packages gnutls_handshake() failed: Handshake failed

W: Failed to fetch https://repo.varnish-cache.org/ubuntu/dists/trusty/varnish-4.0/binary-i386/Packages gnutls_handshake() failed: Handshake failed

E: Some index files failed to download. They have been ignored, or old ones used instead.

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How to use Variables in Photoshop - දන්න සිංහලෙන්
https://www.youtube.com/watch?v=At5L9...

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