Hello,
I have same issue from today before 3 hours.
I didn’t change/update/upload/install any plugins and there was nothing in error log file.
I am sending my server details as per below
Server architecture is Linux
Web server is Apache
PHP SAPI is litespeed
I have tested also
define( ‘WPO_USE_WEBP_CONVERSION’, false );
but steel not working.
Everything working perfectly good when WPO deactivated, but when once activate my admin and front-end both goes 503 error.
I have WPO 3.2.22