Cannot Download and use Live CD's - Invalid Argument/No Such FIle or Directory

[kranked]

Hi, I have just installed docker image of netboot.xyz, however I cannot go to live cd's and start any live CD, I get two immediate errors, below:

'Could not boot: Invalid argument (http://ipxe.org/1c0de802)'
'Could not boot: No such file or directory (http://ipxe.org/2d02803b)'

Things I've tried:

Google searches for solutions.
Checked DNS/ping on host OS (ubuntu) - internet is working.
Checked internet when I've network booted to the netboot.xyz interface via the iPXE shell - I can ping a domain so it seems fine.
Changed permissions on docker volumes, owned the directory with my user recursively and changed docker config to use my user.
I've tried downloading a local asset POPOS however that didn't work, something about incorrect image but that's another issue.

The webserver works fine and it accesible within my network on port 3000.

The directory also seems to be working as I can browse through the 'ubuntu-squash' directory/Index on port 8080.

The config is default, I've reloaded the image a few times too.

Docker/Portainer compose:
version: "2.1"
services:
netbootxyz:
image: ghcr.io/netbootxyz/netbootxyz
container_name: netbootxyz
environment:
- MENU_VERSION=2.0.47 # optional
- NGINX_PORT=80 # optional
- WEB_APP_PORT=3000 # optional
- PUID=1000
- PGID=1000
- TZ=Europe/London
volumes:
- /home/will/netbootxyz/config:/config # optional
- /home/will/netbootxyz/assets:/assets # optional
ports:
- 3000:3000 # optional, destination should match ${WEB_APP_PORT} variable above.
- 69:69/udp
- 8080:80 # optional, destination should match ${NGINX_PORT} variable above.
restart: unless-stopped

Would appreciate some ideas, thank you.

Will