Follow along with the video below to see how to install our site as a web app on your home screen.
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Thank you in advance for your patience and understanding on the matter.
You can check with openssl what domain is causing it:
openssl x509 -in /opt/psa/var/certificates/scfWkDlPC -text -noout
And then try to temp remove the SSL for that domain, if nginx starts then you can renew the SSL to a new one
Debian 8, is already more than EOL and not supported:
https://docs.plesk.com/release-notes/obsidian/software-requirements/#s2-1
Please migrate to a supported, up-to-date OS:
https://support.plesk.com/hc/en-us/articles/12377889325719-Plesk-Migration-and-Transfer-Guide
Either check logs and provide more detailed information, or contact the support team.
Check the Apache and Nginx logs ones at first:
https://support.plesk.com/hc/en-us/articles/12377744787991-Plesk-for-Linux-services-logs-and-configuration-files#apache
To sign in to support, please go to...
I suspect you trying to install a wildcard SSL, that needs a DNS entry for validation.
If your DNS is managed externally then you need to add the entry manually there and wait for it to propagate.
Or use a SSL without wildcard option
Seems some other installer process running, you can try to stop them with:
plesk installer stop
https://support.plesk.com/hc/en-us/articles/12377858950295-Unable-to-open-the-Updates-and-Upgrades-page-or-start-Plesk-Installer-in-CLI-Update-operation-was-locked-by-another-update-process
Not sure if anything changed for that installation, but about the command if you're using chroot SSH access, then you might need to add the command first to it:
https://support.plesk.com/hc/en-us/articles/12377962235159
Please contact Plesk support team on this topic. It will need to be checked on your server.
To sign in to support, please go to https://support.plesk.com
If you bought your license from a reseller, your reseller should provide support for you. If the reseller does not provide support, here is...
Check it with Newsletters spam test by mail-tester.com it will provide you details on things you missed.
Also, its worth checking https://support.plesk.com/hc/en-us/articles/12377376203415-Best-practices-for-sending-outgoing-mail-from-a-Plesk-server
For that, you need on source server to update the settings on the /etc/ssh/sshd_config
Change there "PasswordAuthentication no" to "PasswordAuthentication yes" for example.
PermitRootLogin should be yes
to apply it you need also to restart there the service:
service ssh restart