Hi,
I use Plesk Onyx 17.8.11 Update #35, CentOS Linux 7.6.1810 (Core)
I installed PHP 7.3, and when the FPM service is restarted, it gives an error.
I noticed that missing ionCube loader, Is this the reason for the error and how to install ionCube for PHP 7.3
There is Beta Loaders for PHP 7.3...