I'm using the latest version of Plesk. One of my websites still uses PHP 5.4. Some other server management tools offer updated older versions of PHP to not inconvenience their users. However, I haven't been able to do this with Plesk. I browsed the forum and read in some similar topics that it's not possible to install old PHP versions through the interface and they must be installed manually. I tried a manual installation, but when I choose this version from the interface, my site starts...
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