Broken dir and symlinks in package

[navycat]

/usr/lib/${DEB_HOST_MULTIARCH}# ls -al
итого 8
drwxr-xr-x 2 root root 4096 окт 22 17:02 .
drwxr-xr-x 141 root root 4096 янв 25 23:13 ..
lrwxrwxrwx 1 root root 18 ноя 1 15:59 libfreebl3.chk -> nss/libfreebl3.chk
lrwxrwxrwx 1 root root 17 ноя 1 15:59 libfreebl3.so -> nss/libfreebl3.so
lrwxrwxrwx 1 root root 22 ноя 1 15:59 libfreeblpriv3.chk -> nss/libfreeblpriv3.chk
lrwxrwxrwx 1 root root 21 ноя 1 15:59 libfreeblpriv3.so -> nss/libfreeblpriv3.so

https://packages.ubuntu.com/groovy/amd64/libnss3/filelist

/usr/lib/${DEB_HOST_MULTIARCH}/libfreebl3.chk <-- what this?
/usr/lib/${DEB_HOST_MULTIARCH}/libfreebl3.so
/usr/lib/${DEB_HOST_MULTIARCH}/libfreeblpriv3.chk
/usr/lib/${DEB_HOST_MULTIARCH}/libfreeblpriv3.so
/usr/lib/x86_64-linux-gnu/libnss3.so
/usr/lib/x86_64-linux-gnu/libnssutil3.so
/usr/lib/x86_64-linux-gnu/libsmime3.so
/usr/lib/x86_64-linux-gnu/libssl3.so
/usr/lib/x86_64-linux-gnu/nss/libfreebl3.chk
/usr/lib/x86_64-linux-gnu/nss/libfreebl3.so
/usr/lib/x86_64-linux-gnu/nss/libfreeblpriv3.chk
/usr/lib/x86_64-linux-gnu/nss/libfreeblpriv3.so
/usr/lib/x86_64-linux-gnu/nss/libnssckbi.so
/usr/lib/x86_64-linux-gnu/nss/libnssdbm3.chk
/usr/lib/x86_64-linux-gnu/nss/libnssdbm3.so
/usr/lib/x86_64-linux-gnu/nss/libsoftokn3.chk
/usr/lib/x86_64-linux-gnu/nss/libsoftokn3.so
/usr/share/doc/libnss3/changelog.Debian.gz
/usr/share/doc/libnss3/copyright
/usr/share/lintian/overrides/libnss3

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: libnss3 2:3.55-1ubuntu3
ProcVersionSignature: Ubuntu 5.8.0-41.46-generic 5.8.18
Uname: Linux 5.8.0-41-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu50.5
Architecture: amd64
CasperMD5CheckResult: skip
Date: Thu Feb 4 23:54:38 2021
InstallationDate: Installed on 2020-11-01 (95 days ago)
InstallationMedia: Ubuntu-MATE 20.10 "Groovy Gorilla" - Release amd64 (20201022)
ProcEnviron:
 LANGUAGE=ru
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
SourcePackage: nss
UpgradeStatus: No upgrade log present (probably fresh install)