Customer found: center core was bent. And confirm us their internal wireless network recently has trouble. He has tried his phone hot spot, all is good.

And also verified to hook up only main antenna, and left aux antenna un-connected.

I am still able to browse internet without problem.

Please close this case.

According to the logs, we can see the iwlwifi debug message so there is no problem with this driver. And can't find wifi access point, mostly due to poor signal. Secondly, there is a problem with the motherboard or WiFi module. In addition, the customer mentioned that only one antenna was connected... so please connect all the antennas and check if the antennas are working beforehand.