cobbler pxe boot

Hello, i'm trying to set up automated installations of multiple different Linux distros. I have been able to get OpenSuSe, RHEL*, but am having some issues getting Debian/Ubuntu to work. Whenever I load the netboot ISO into cobbler and boot into the installer it gets to the point of checking for the CD/DVD and errors out. This is the error that I get. https://imgur.com/a/PZHfUhX

I can provide my preseed file if need be.