Ubuntu – “the package cache file is corrupted” error

When I run

sudo apt-get update

I get multiple errors and warnings. The final error is:

The package cache file is corrupted

Here are the errors and warnings.

Reading package lists... Error!
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
W: Target Packages (main/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
W: Target Translations (main/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
E: Failed to fetch store:/var/lib/apt/lists/partial/security.ubuntu.com_ubuntu_dists_xenial-security_main_dep11_icons-64x64.tar.gz  Hash Sum mismatch
E: Some index files failed to download. They have been ignored, or old ones used instead.
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
W: Target Packages (main/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
W: Target Translations (main/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list:54
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_main_binary-amd64_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_main_binary-i386_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_main_binary-all_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_main_i18n_Translation-en (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_restricted_binary-amd64_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_restricted_binary-i386_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_restricted_binary-all_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_restricted_i18n_Translation-en (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_universe_binary-amd64_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_universe_binary-i386_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_universe_binary-all_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_universe_i18n_Translation-en (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_multiverse_binary-amd64_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_multiverse_binary-i386_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_multiverse_binary-all_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_multiverse_i18n_Translation-en (1)
W: You may want to run apt-get update to correct these problems
E: The package cache file is corrupted

Question is different in that there are numerous warnings and errors. We have the same error message but not the same problem.