java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.bluetooth.BluetoothGatt.discoverServices()' on a null object reference

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Attempt to invoke virtual method 'boolean android.bluetooth.BluetoothGatt.discoverServices()' on a null object reference
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.bluetooth.BluetoothGatt.discoverServices()' on a null object reference
at com.actofit.wear.Home.LifeLogStopService$1.onConnectionStateChange(LifeLogStopService.java:103)
at android.bluetooth.BluetoothGatt$1.onClientConnectionState(BluetoothGatt.java:181)
at android.bluetooth.IBluetoothGattCallback$Stub.onTransact(IBluetoothGattCallback.java:70)
at android.os.Binder.execTransact(Binder.java:453)

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