No NFC device found.

I compiled mfoc-hardnested on an Apple M1, connected to a USB PN532. When I run mfoc-hardnested, it prints out "No NFC device found" and exits. I have libnfc 1.8.0 installed, and running nfc-scan-device gives me

```
nfc-scan-device uses libnfc 1.8.0
1 NFC device(s) found:
- pn532:
    pn532_uart:/dev/tty.usbserial-0001
```

What is the problem here?

Thanks