Trouble with Rock Pi 4A v1.4 GPIO control failed

Hi ,
My Rock Pi 4A v1.4 GPIO pin at Pin#18 GPIO4_D4 working level is not correct,
and this pin control always failed, but the other board is fine. The CPU’s temperature is more higher than other board, is that some wrong at CPU or board ?

Do you remember what operation you have done to this pin?
The voltage of this pin is 3.3V or 0.
Seems that the voltage of this pin is pulled lower because of some reason.