When the server stops, the following error always appears in the log: https://pastebin.com/s5TZ1bTp
What could be the reason for that?
What other information can I provide?

Paper 1.15.2 232
DiscordSRV - 1.19.0-SNAPSHOT-1588401892

This has been fixed, development builds available @ https://snapshot.discordsrv.com

Thanks :)