Problem with PHP

Today, I installed a couple of upgrades as per the Virtualmin --> System Information recommended.
Now, nothing that requires PHP on my server seems to be working (including roundcube, WHMCS, etc); and all I get is a bunch of code.
When I try to open squirellmail, the browser tries to download a file.
When I try to open roundcube, the browser tries to download a file.
When I try to open whmcs, the browser, it just shows a ton of code (ATTACHED).-

Can anybody tell me how I can fix this?

I have included what I am seeing when I open any PHP websites on my server.

Thanks in advance.

Howdy,

Take a peek at the documentation here titled “Why does PHP / ProFTPd no longer work after performing updates? (I’m using CentOS, and enabled third party repositories)” and see if that helps with your issue:

https://www.virtualmin.com/documentation/system/faq