Continuous "QmiWwanThread poll err/hup/inval" output upon executing "sudo ./quectel-CM [my args]"]

I had to set up a new account (forgot my password) but I’m the same person who you’ve replied to.

It’s been a while but if I remember correctly, I got it working when I switched from an 8gb raspberry pi4 to the 4gb raspberry pi 4. Are you using an 8GB pi 4? I think it had something to do with the 64-bit raspberry pi OS.