APP_DEBUG logged output is not visible on Serial(using docklight)

I am trying to run a default example main.c (SDK for command line user) available on link

Output of : APP_DEBUG is not visible on serial(using docklight)
EX - APP_DEBUG(“OpenCPU: Customer Application\r\n”);

I am using MAIN port to flush the code and using the same to view output of APP_DEBUG

If your Quecopen code flush succeeds, this will not be the case, the steps can refer to our “Quick Start” document; After using MAIN port to flush the code,you could send AT via MAIN port;Then post your docklight log here.