KC868-A4 dht22 problem

[Joseph.o]

The problem comes when turn in on and off many times.
For me the second or the third times the value becomes null.

I will try with the same code and try to see where the problem comes

---

i tried withe same code as yours, the diffrent is that i used dht22.
when i close and open the input many times, the values becomes nan.