Sorry, problem is resolved.

DiscordSRV Downloaded at : http://scarsz.me:8080/job/DiscordSRV/lastSuccessfulBuild/artifact/target/DiscordSRV-Build-13.6-SNAPSHOT-317.jar

Command: /discord link

Error:"現在、内部エラーのためにアカウントをリンクできません。サーバー管理チームに連絡してください。"

(Google Translate: "Currently we can not link accounts due to internal error. Please contact the server administration team."

My config.yml: https://pastebin.com/LGxiy4SL (Note: I am japanese, config.yml is write japanese.)

/discord debug: https://gist.github.com/anonymous/35632c966911597905ae8e932277817e