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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If you are still using CentOS 7.9, it's time to convert to Alma 8 with the free centos2alma tool by Plesk or Plesk Migrator. Please let us know your experiences or concerns in this thread: CentOS2Alma discussion
That one routes the output - including any error messages - to /dev/null. So the first thing would be to change that to a suitable log file location, so you can see if it produces any messages.