Files failed to download during install
What it looks like in your log
Failed to download create-1.20.1-0.5.1.jar from https://edge.forgecdn.net
What causes it
One or more downloads failed mid-install, leaving the pack incomplete. The server then boots without those mods or refuses to start.
How to fix it
Run the install again to completion and compare the mods folder against the pack manifest before starting.
Not sure this is your problem? Paste your log and Roastd will tell you which of these it actually matched, and what else it found.
Check your own log