tc errors

static ConvertReason(E) {
                        let T = "";
                        switch (E) {
                            case 0:
                                T = "There is no internet connection...";
                                break;
                            case 1:
                                T = "Opss, chatroom has no free slots for users";
                                break;
                            case 2:
                                T = "Chatroom has been closed by administrator";
                                break;
                            case 3:
                                T = "This room does not allow guests to join, please sign in";
                                break;
                            case 4:
                                T = "You has been banned from chatroom by Moderator";
                                break;
                            case 5:
                                T = "Wrong password";
                                break;
                            case 6:
                                T = "Single connection is allowed for chatroom";
                                break;
                            case 7:
                                T = "An error occurred while connecting to the server...";
                                break;
                            case 8:
                                T = "An error occurred while connecting to the server...";
                                break;
                            case 9:
                                T = "An error occurred while connecting to the server...";
                                break;
                            case 10:
                                T = "An error occurred while connecting to the server...";
                                break;
                            case 11:
                                T = "An error occurred while connecting to the server...";
                                break;
                            case 12:
                                T = "You has been kicked from chatroom by Moderator";
                                break;
                            default:
                                T = "There is no internet connection...";
                        }
                        return T
                    }