Fix crash caused by new changes

src/User.ts

@@ -99,7 +99,7 @@ export class User {
         // Prevent the user from taking turns or chatting, in case the ban command takes a while
         this.IP.muted = true;
         //@ts-ignore
-        var cmd = this.Config.collabvm.bancmd.replace(/\$IP/g, this.IP).replace(/\$NAME/g, this.username);
+        var cmd = this.Config.collabvm.bancmd.replace(/\$IP/g, this.IP.address).replace(/\$NAME/g, this.username);
         await execaCommand(cmd);
         this.kick();
     }
@@ -114,4 +114,4 @@ export enum Rank {
     Unregistered = 0,
     Admin = 2,
     Moderator = 3,
-}
+}