ubuntu-minimal package not found

[Barış Aydın]

After updating your package information, the essential package 'ubuntu-minimal' could not be located. This may be because you have no official mirrors listed in your software sources, or because of excessive load on the mirror you are using. See /etc/apt/sources.list for the current list of configured software sources. In the case of an overloaded mirror, you may want to try the upgrade again later.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.38
ProcVersionSignature: Ubuntu 5.15.0-46.49~20.04.1-generic 5.15.39
Uname: Linux 5.15.0-46-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
CasperMD5CheckResult: skip
CrashDB: ubuntu
Date: Fri Aug 19 11:31:42 2022
InstallationDate: Installed on 2021-06-16 (428 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=tr_TR.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to focal on 2022-08-19 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2022-08-19 11:30:07.002471
 Log time: 2022-08-19 11:30:11.546077
 Log time: 2022-08-19 11:31:39.455301
 Log time: 2022-08-19 11:31:45.485370
VarLogDistupgradeTermlog: