—–Go to the following path
opt/bitnami/apache2/conf/httpd.conf
—–comment out
#Include conf/pagespeed.conf
#Include conf/pagespeed_libraries.conf
—–Restart apache
sudo /opt/bitnami/ctlscript.sh restart apache
—–flush page speed cache
sudo touch /opt/bitnami/apache2/var/cache/mod_pagespeed/cache.flush
sudo /opt/bitnami/ctlscript.sh restart apache