URGENT: cPanel Administration Error 500 After PHP Update – Website Down, Desperate for Fix!

Context & Frustration: I'm completely stuck and desperate. My website has been down for hours after a routine PHP update, and I can't figure out why.

Specific Problem: Immediately after updating PHP via cPanel, I'm getting a persistent 500 Internal Server Error. It seems related to core cPanel administration files or permissions, but I've tried everything.

Technical Illustration: Here's a snippet from my error log:

[Thu Jan 01 10:00:00.123456 2024] [core:alert] [pid 12345] [client 192.168.1.1:12345] /home/user/public_html/.htaccess: Invalid command 'php_value', perhaps misspelled or defined by a module not included in the server configuration

Urgent Call for Help: I've exhausted all my options. Has anyone encountered this specific cPanel administration error after a PHP update? I urgently need expert advice on cPanel management to get my site back online.