fix: can't response

src/modules/ChatBot.ts

@@ -31,6 +31,7 @@ export default class ChatBot {
     if (a === 1) {
       if (learn[0]) {
         if (args.startsWith(learn[0].command)) {
+          db.release()
           return `${learn[0].result}\n\`${
             (await msg.client.users.fetch(learn[0].user_id)).username
           }님이 알려주셨어요.\``