fix for ban cmd issue

src/commands/ban.ts

@@ -24,6 +24,8 @@ export default class Ban extends Command {
         } catch {
           return this.error(message.channel, 'Cannot find user.');
         }
+      } else {
+        user = member.user;
       }
       try {
         await this.client.guilds.get(this.client.config.guildID).getBan(args[0]);