Issue Error plesk installer

[garcue]

Hello everyone,

I am getting this error every time I try to run the plesk installer.

Does anybody know how I can fix it?

Fetched 445 kB in 1s (353 kB/s)
Reading package lists...
W: GPG error: Index of /debian/PHP52_17 jessie InRelease: The following signatures were invalid: 8BADC1A02FC9C07FB8C20EC0BD11A6AA914BDF7E
W: The repository 'Index of /debian/PHP52_17 jessie InRelease' is not signed.
W: GPG error: Index of /debian/PHP53_17 jessie InRelease: The following signatures were invalid: 8BADC1A02FC9C07FB8C20EC0BD11A6AA914BDF7E
W: The repository 'Index of /debian/PHP53_17 jessie InRelease' is not signed.
W: GPG error: Index of /debian/PHP54_17 jessie InRelease: The following signatures were invalid: 8BADC1A02FC9C07FB8C20EC0BD11A6AA914BDF7E
W: The repository 'Index of /debian/PHP54_17 jessie InRelease' is not signed.

ERROR: Not found source for system packages (release 8) in APT software sources configuration:
Package files:
100 /var/lib/dpkg/status
release a=now
500 Index of /pool/PHP_7.4.8_59 jessie/all amd64 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 7.4 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /pool/PHP_7.3.20_172 jessie/all amd64 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 7.3 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /pool/PHP_7.2.32_136 jessie/all amd64 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 7.2 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /pool/PHP_7.1.33_96 jessie/all amd64 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 7.1 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /debian/PHP70_17 jessie/all i386 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 7.0 packages,c=all,b=i386
origin autoinstall.plesk.com
500 Index of /debian/PHP70_17 jessie/all amd64 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 7.0 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /debian/PHP56_17 jessie/all i386 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 5.6 packages,c=all,b=i386
origin autoinstall.plesk.com
500 Index of /debian/PHP56_17 jessie/all amd64 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 5.6 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /debian/PHP55_17 jessie/all i386 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 5.5 packages,c=all,b=i386
origin autoinstall.plesk.com
500 Index of /debian/PHP55_17 jessie/all amd64 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 5.5 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /debian/PHP54_17 jessie/all i386 Packages
release o=Parallels,a=jessie,n=jessie,l=PHP v 5.4.45 packages,c=all,b=i386
origin autoinstall.plesk.com
500 Index of /debian/PHP54_17 jessie/all amd64 Packages
release o=Parallels,a=jessie,n=jessie,l=PHP v 5.4.45 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /debian/PHP53_17 jessie/all i386 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 5.3 packages,c=all,b=i386
origin autoinstall.plesk.com
500 Index of /debian/PHP53_17 jessie/all amd64 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 5.3 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /debian/PHP52_17 jessie/all i386 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 5.2 packages,c=all,b=i386
origin autoinstall.plesk.com
500 Index of /debian/PHP52_17 jessie/all amd64 Packages
release o=Plesk,a=jessie,n=jessie,l=PHP v 5.2 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /RUBY_0.0.2 stretch/all amd64 Packages
release o=Plesk,a=stretch,n=stretch,l=RUBY v 0.0.2 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /PMM_0.1.11 stretch/all amd64 Packages
release o=Plesk,a=stretch,n=stretch,l=PMM 0.1.11 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /NODE_0.0.2 all/all amd64 Packages
release o=Plesk,a=all,n=all,l=NODE v 0.0.2 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 https://packages.grafana.com/oss/deb stable/main amd64 Packages
release o=grafana stable,a=stable,n=stable,l=grafana stable,c=main,b=amd64
origin packages.grafana.com
500 Index of linux/debian/ stretch/stable amd64 Packages
release o=Docker,a=stretch,l=Docker CE,c=stable,b=amd64
origin download.docker.com
500 Index of /debian/ stretch/amplify-agent i386 Packages
release v=9.0,o=amplify,a=stable,n=stretch,l=amplify,c=amplify-agent,b=i386
origin packages.amplify.nginx.com
500 Index of /debian/ stretch/amplify-agent amd64 Packages
release v=9.0,o=amplify,a=stable,n=stretch,l=amplify,c=amplify-agent,b=amd64
origin packages.amplify.nginx.com
500 Index of /kernelcare-debian/9/ stable/main amd64 Packages
release o=kernelcare.com,n=stable,l=kernelcare,c=main,b=amd64
origin repo.cloudlinux.com
500 Index of / all/utils i386 Packages
release o=. all,a=all,n=all,l=. all,c=utils,b=i386
origin repo.cloudradar.io
500 Index of / all/utils amd64 Packages
release o=. all,a=all,n=all,l=. all,c=utils,b=amd64
origin repo.cloudradar.io
500 Index of /debian/SITEBUILDER_17.8.12 all/all i386 Packages
release o=Plesk,a=all,n=all,l=SITEBUILDER 17.8.12 packages,c=all,b=i386
origin autoinstall.plesk.com
500 Index of /debian/SITEBUILDER_17.8.12 all/all amd64 Packages
release o=Plesk,a=all,n=all,l=SITEBUILDER 17.8.12 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /pool/PSA_18.0.28_3654 jessie/extras amd64 Packages
release o=Plesk,a=jessie,n=jessie,l=Plesk 18.0.28 packages,c=extras,b=amd64
origin autoinstall.plesk.com
500 Index of /pool/PSA_18.0.28_3654 jessie/all amd64 Packages
release o=Plesk,a=jessie,n=jessie,l=Plesk 18.0.28 packages,c=all,b=amd64
origin autoinstall.plesk.com
500 Index of /debian-security stretch/updates/main i386 Packages
release v=9,o=Debian,a=oldstable,n=stretch,l=Debian-Security,c=main,b=i386
origin security.debian.org
500 Index of /debian-security stretch/updates/main amd64 Packages
release v=9,o=Debian,a=oldstable,n=stretch,l=Debian-Security,c=main,b=amd64
origin security.debian.org
500 Index of /debian stretch-updates/main i386 Packages
release o=Debian,a=oldstable-updates,n=stretch-updates,l=Debian,c=main,b=i386
origin deb.debian.org
500 Index of /debian stretch-updates/main amd64 Packages
release o=Debian,a=oldstable-updates,n=stretch-updates,l=Debian,c=main,b=amd64
origin deb.debian.org
500 Index of /debian stretch/main i386 Packages
release v=9.13,o=Debian,a=oldstable,n=stretch,l=Debian,c=main,b=i386
origin deb.debian.org
500 Index of /debian stretch/main amd64 Packages
release v=9.13,o=Debian,a=oldstable,n=stretch,l=Debian,c=main,b=amd64
origin deb.debian.org
Pinned packages:


exit status 1