Could not open external command file for reading via open(): (13) -> Permission denied in nagios v4.01

I ended up getting this in my nagios.log, the fix was to change the permissions on the rw file! chmod 777 /usr/local/nagios/var/rw/nagios.cmd

Directory index forbidden by Options directive: /var/www/html/

I was receiving this error in my nagios apache log: Directory index forbidden by Options directive: /var/www/html/ to fix this, I just did touch index.html to /var/www/html It creates a file in the directory that is empty. I found this safer then turning on indexes for my nagios install.