How to enable PHP error log

For OpenLiteSpeed:

in your vhost conf , as screenshot

add the code in this section

phpIniOverride { 
php_admin_value error_log "php_error.log"
php_admin_value display_errors "on"

and restart OpenLiteSpeed.

second line is optional , it will display error , sometimes it is not preferred the visitor to see the error message, as it might contain sensitive information , should only use display_errors on dev site.

the php_error.log file will be at your /home/

For LiteSpeed Enterprise:

use that same code as above , insert it after

CacheRoot lscache

as my screenshot , save and restart LSWS