Bluetooth - Uninitialized constant Rho::BluetoothConnection

Hi All,
Trying to get bluetooth going to connect to a RFID reader.
When attempting to even check that for bluetooth on the device I am getting uninitialized constant error (See Screenshot below)

Any help would be appreciated.

NDK r17c
Android SDK version 27
ruby 2.4.0
rhodes SDK 7.1.0

Build.yml

insert code here## Note: sdk is full path to Rhodes root. If not defined - automatically find latest installed Rhodes gem
sdk: "/home/lothcor/rhodes"
sdkversion: 7.0.0
name: gTransfer
version: 1.2
vendor: hico
rho_app_id: au.com.hico.gTransfer
build: debug
applog: rholog.txt

android_title: 0

android:
 #manifest_template: 'AndroidManifest.erb'
 version: "8.0.0"
 abis:
   - arm
   - x86
 capabilities:
   - bluetooth
 ## Note: in order to simplify debugging only app messages and system channels with priority informative and higher, and any errors are enabled by default
 logcatFilter: APP:I StrictMode:I DEBUG:I *:E

extensions: []

rhobundle:
 exclude_items:
 - thumb.db

Controller

require 'rho/rhocontroller'
require 'helpers/browser_helper'
require 'rho/rhobluetooth'

class AnimalController < Rho::RhoController
 include BrowserHelper

 # GET /Animal
 def index
   if Rho::BluetoothManager.is_bluetooth_available then
     Alert.show_popup("BT Available")
   end
   render :back => '/app'
 end


end