Resolved PHP installation older than 7.4

[CobraArbok]

Server operating system version

Ubuntu 22.04.1 LTS

Plesk version and microupdate number

18.0.48

Once an Internet site has been migrated, it no longer works because it still needs a version older than 7.4 which, however, is no longer present on the latest version of Plesk.
How can I install it? And do I have to follow some precautions to avoid problems with other sites?
Thanks in advance.

 

[Hangover2]

@CobraArbok There is a Plesk article dealing with your issue: How to add a custom PHP version in Plesk for Linux?