Issue cant install updates since 18.0.81.4

[JensVi]

Server operating system version

Ubuntu 20.04.6 LTS

Plesk version and microupdate number

Plesk Obsidian 18.0.81 Update 4

Hello

Unfortunately, my previous post was deleted. So here’s my request again:

Since updating to version 18.0.81.4, I haven’t been able to install any Plesk updates. When I try to install updates via the web interface, the connection times out with a “Server not reachable” error.

When I try to install the latest version via SSH using “plesk installer update,” I get the following error. (Log truncated)

ERROR: Not found source for system packages (release 20.04) in APT software sources configuration:
Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 http://autoinstall.plesk.com/pool/WPB_18.0.69_88 all/all all Packages
     release o=Plesk,a=all,n=all,l=WPB 18.0.69 packages,c=all,b=all
     origin autoinstall.plesk.com
 500 http://autoinstall.plesk.com/PHP85_17 focal/all amd64 Packages
     release o=Plesk,a=focal,n=focal,l=PHP v 8.5 packages,c=all,b=amd64
     origin autoinstall.plesk.com
 500 http://autoinstall.plesk.com/PHP84_17 focal/all amd64 Packages
     release o=Plesk,a=focal,n=focal,l=PHP v 8.4 packages,c=all,b=amd64
     origin autoinstall.plesk.com
 500 http://autoinstall.plesk.com/PHP83_17 focal/all amd64 Packages
     release o=Plesk,a=focal,n=focal,l=PHP v 8.3 packages,c=all,b=amd64
     origin autoinstall.plesk.com
 500 http://autoinstall.plesk.com/PHP82_17 focal/all amd64 Packages
     release o=Plesk,a=focal,n=focal,l=PHP v 8.2 packages,c=all,b=amd64
     origin autoinstall.plesk.com
 500 http://autoinstall.plesk.com/PHP81_17 focal/all amd64 Packages
     release o=Plesk,a=focal,n=focal,l=PHP v 8.1 packages,c=all,b=amd64
     origin autoinstall.plesk.com
 500 http://autoinstall.plesk.com/PHP80_17 focal/all amd64 Packages
     release o=Plesk,a=focal,n=focal,l=PHP v 8.0 packages,c=all,b=amd64
     origin autoinstall.plesk.com
 500 http://autoinstall.plesk.com/PHP74_17 focal/all amd64 Packages
     release o=Plesk,a=focal,n=focal,l=PHP v 7.4 packages,c=all,b=amd64
     origin autoinstall.plesk.com
 500 http://autoinstall.plesk.com/pool/PHP_7.3.33_248 focal/all amd64 Packages
     release o=Plesk,a=focal,n=focal,l=PHP v 7.3 packages,c=all,b=amd64
     origin autoinstall.plesk.com
 500 http://autoinstall.plesk.com/pool/PHP_7.2.34_151 focal/all amd64 Packages
     release o=Plesk,a=focal,n=focal,l=PHP v 7.2 packages,c=all,b=amd64
     origin autoinstall.plesk.com
 500 http://autoinstall.plesk.com/pool/PHP_7.1.33_98 focal/all amd64 Packages
     release o=Plesk,a=focal,n=focal,l=PHP v 7.1 packages,c=all,b=amd64
     origin autoinstall.plesk.com
 500 http://autoinstall.plesk.com/PHP70_17 focal/all amd64 Packages
     release o=Plesk,a=focal,n=focal,l=PHP v 7.0 packages,c=all,b=amd64
     origin autoinstall.plesk.com
 500 https://autoinstall.plesk.com/grafana_12/deb stable/main amd64 Packages
     release o=Plesk,a=stable,n=stable,l=grafana,c=main,b=amd64
     origin autoinstall.plesk.com
 500 https://mirror.mariadb.org/repo/10.11/debian buster/main ppc64el Packages
     release o=MariaDB,a=buster,n=buster,l=MariaDB,c=main,b=ppc64el
     origin mirror.mariadb.org
 500 https://mirror.mariadb.org/repo/10.11/debian buster/main arm64 Packages
     release o=MariaDB,a=buster,n=buster,l=MariaDB,c=main,b=arm64
     origin mirror.mariadb.org
 500 https://mirror.mariadb.org/repo/10.11/debian buster/main amd64 Packages
     release o=MariaDB,a=buster,n=buster,l=MariaDB,c=main,b=amd64
     origin mirror.mariadb.org
 500 https://mirror.mariadb.org/repo/10.11/ubuntu focal/main ppc64el Packages
     release o=MariaDB,a=focal,n=focal,l=MariaDB,c=main,b=ppc64el
     origin mirror.mariadb.org
 500 https://mirror.mariadb.org/repo/10.11/ubuntu focal/main arm64 Packages
     release o=MariaDB,a=focal,n=focal,l=MariaDB,c=main,b=arm64
     origin mirror.mariadb.org
 500 https://mirror.mariadb.org/repo/10.11/ubuntu focal/main amd64 Packages
     release o=MariaDB,a=focal,n=focal,l=MariaDB,c=main,b=amd64
     origin mirror.mariadb.org
 500 https://repo.imunify360.cloudlinux.com/imunify360/ubuntu/20.04 focal/main amd64 Packages
     release o=imunify360.com,n=focal,l=imunify360.com,c=main,b=amd64
     origin repo.imunify360.cloudlinux.com
 500 http://autoinstall.plesk.com/pool/PSA_18.0.81_20371 focal/extras amd64 Packages
     release o=Plesk,a=focal,n=focal,l=Plesk 18.0.81 packages,c=extras,b=amd64
     origin autoinstall.plesk.com
 500 http://autoinstall.plesk.com/pool/PSA_18.0.81_20371 focal/all amd64 Packages
     release o=Plesk,a=focal,n=focal,l=Plesk 18.0.81 packages,c=all,b=amd64
     origin autoinstall.plesk.com
Pinned packages:
     grafana -> 12.4.3 with priority 990


exit status 1

thank you for help
Jens