php_admin_value[error_log] = /home/user/log/fpm-php.wpcvrc.log
php_admin_flag[log_errors] = on

Not if using php-fpm `WP_DEBUG_LOG` will fail if ```conf php_admin_value[error_log] = /home/user/log/fpm-php.wpcvrc.log php_admin_flag[log_errors] = on ``` is defined in the php-fpm-pool config. You must disable for debugging to work, or review the php log itself.