IWR6843ISK: Can't create new tasks in Long Range Detection Lab

Hi,

I added a new task in long range detection lab as below. (Toolbox version 4.7.0)

#define MMWDEMO_NEW_TASK_PRIORITY                 2 //new task priority
#define MMWDEMO_CLI_TASK_PRIORITY                 3
#define MMWDEMO_DPC_OBJDET_DPM_TASK_PRIORITY      4
#define MMWDEMO_MMWAVE_CTRL_TASK_PRIORITY         5

void mmwDemo_newTask(UArg arg0, UArg arg1)
{
    //local variables

    while(1)
    {
        //things to do
    }
}

    //launch task in MmwDemo_initTask
    Task_Params_init(&taskParams);
    taskParams.priority  = MMWDEMO_NEW_TASK_PRIORITY;
    taskParams.stackSize = 4*1024;
    Task_create(mmwDemo_newTask, &taskParams, NULL);

It can be built successfully but stuck after flashing.

And if I delete the while loop, it won't get stuck.

Thanks for any advice.