Hello, /usr/local/lsws/lsphp81/etc/php/81/litespeed/php.ini Check if this file exists and is it empty?
if not present or empty
Copy the php.ini shown here according to phpinfo to the corresponding path
cp /www/server/php/81/etc/php.ini /usr/local/lsws/lsphp81/etc/php.ini
cp /www/server/php/81/etc/php.ini /usr/local/lsws/lsphp81/etc/php/81/litespeed/php.ini
If it still doesn't work, please reinstall php8.1 and check the installation log