Error when attempting to stop apps. about matrix-os HOT 3 CLOSED

pi@openhab:~/matrix-os$ NODE_ENV=rc node index.js
Environment Selected: rc
Loading...  device
Loading...  event
Loading...  service
Not using device data from db, using MATRIX_DEVICE_ID and MATRIX_DEVICE_SECRET instead!
Starting as device: d643a34c038a
Bluetooth pairing enabled
Installed Apps: gaugeLed, ledDemo, testapp, HelloWorld
Local Apps: HelloWorld.matrix, gaugeLed.matrix, ledDemo.matrix
Local / Installed Δ -1
MXSS Connected: http://mxss.admobilize.com
MALOS COMPONENTS  ⚙ IMU:20013 | Provides yaw/pitch/roll. Check Imu message (protocol buffer)
 ⚙ Humidity:20017 | Provides humidity and temperature. Check Humidity message (protocol buffer)
 ⚙ Everloop:20021 | Write-only. There are 35 leds. Values range from 0 to 255. Check message EverloopImage (protocol buffer)
 ⚙ Pressure:20025 | Provides barometer/altimeter and temperature. Check Pressure message (protocol buffer)
 ⚙ UV:20029 | Provides UV index. Check UV index message (protocol buffer). Also provides a string with the UV risk according to the OMS. See: https://www.epa.gov/sunsafety/uv-index-scale-0
 ⚙ MicArray_Alsa:20037 | Simple ALSA Driver for MATRIX Creator's Microphone Array
 ⚙ Lirc:20041 | Write-read. Get list remotes and send commands via IR. In development
 ⚙ Servo:20045 | Write-read. Servo handler. In development
 ⚙ Gpio:20049 | Write-read. Gpio handler. In development

=<[^\/^]>= [d643a34c038a] ready
[5915cadf6af54a2000793da8]
 _  _ ____ ___ ____ _ _  _
 |\/| |__|  |  |__/ |  \/   [o__o]
 |  | |  |  |  |  \ | _/\_  v0.14.0

matrix deploy ledDemo
matrix start ledDemo