Dragonboard 410c waiting for process to come online

Hello,
I am quite new to dragonboard 410c and android.

I am trying to load a program to blink led.
But after i run i get the following problem.

$ adb shell am start -n “com.example.nrj.led/com.example.nrj.led.MainActivity” -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Client not ready yet…Waiting for process to come online
Waiting for process to come online
Waiting for process to come online
Waiting for process to come online
Waiting for process to come online
Waiting for process to come online
Waiting for process to come online
Waiting for process to come online
Waiting for process to come online

Can someone help on this ?