I will show you what they sent me
"Hello,
No, you're not understanding what we're telling you.
When your server starts, it downloads files that it requires to run, if it can't download them, it won't start.
One of the files your server needs to run won't download, because the file doesn't exist on the website where it's being downloaded from. Nothing we can do about this, Forge need to be contacted so that they can add the file to their site, then your server is able to download it and start.
Many Thanks,
Callum Marshall
WebSound Founder"