Serial Monitoring Problem - Xenon

Hello,
I am using Xenon as a Standalone device. I want to see the DHT22 data on CLI Serial monitor. No data printed at all. I checked the connections. I thought it was the cable and changed it. I am using the example code of PietteTech library. The code compiled and flashed successfully. Have you ever faced this kind of issue? Can you please share your experiences? I am adding a CLI photo that I am facing.

Ekran Resmi 2020-05-12 14.08.26

If you need any more information I will do my best to provide. Thank you for your time reading.

I also downloaded a serial monitoring app. Nothing has seen on monitor yet.

I tried this code too. But monitor does not respond.

SYSTEM_MODE(SEMI_AUTOMATIC);

int counter = 0;

void setup() {
	Serial.begin(9600);
	pinMode(D7, OUTPUT);
}

void loop() {
	Serial.printlnf("testing %d", ++counter);
	digitalWrite(D7, !digitalRead(D7));
	delay(1000);
}

I get stuck here because of this. If I can not solve this I probably will have to change the platform.

Still the same.