My server was running Spigot on 1.20.1, but recently I decided to switch it to PaperMC for the performance improvements. It's a cross-play server and for reasons I'd like to keep it on 1.20.1.
In the JAR/Preinstall menu, Paper does not have a 1.20.1 version available, so I decided to download one from the site (https://papermc.io/downloads/all) and upload it directly through the file manager. I deleted the old spigot.jar file and uploaded paper-1.20.1-196.jar in the same location, and I changed the "server type" setting to match the new filename. But now the server crashes when starting up. Did I miss a step?
Crash report: https://mcpaste.io/be5618dafea67d41