grep -r 'display_errors' /etc | grep -v '#'

This should only display things where display_errors is defined directly.

I suspect there’s one that is doing this for you natively.

This is weird I had the “display_errors = On” in /etc/php/8.4/fpm/php.ini.
I set it to off. I restart php-fpm and apache2 and I still got the warnings.

I restart the server and the warning still there.

I have Debian 13 with apache2 installed.

I looked for every php.ini I can find and none of them have display_errors = On. They all have display_errors = Off

This appears like you have your php file setup to output errors to the display.

If you look at your /etc/php.ini (I don’t know os you’re running so you may have to find this file in your /etc folder (find /etc -type f -name php.ini)

Look in this file for display_errors = On

You should look for one where it doesn’t look similar to # display_errors = On

if you don’t find one that isn’t already commented (that’s what the # means) then by default display_errors is on so in that stanza after the comments create a new line that is:

display_errors = Off

Once done, save the file and restart php-fpm and I like to restart html just in case:

sudo systemctl restart php-fpm httpd # for redhat based OS's

sudo systemctl restart php-fpm apache2 # for debian based OS's