UnicodeDecodeError in logger.info(delimiter.join(fields))

[LaurentLacheny]

I have this exception :
Traceback (most recent call last):
File "probemon.py", line 94, in
main()
File "probemon.py", line 91, in main
sniff(iface=args.interface, prn=built_packet_cb, store=0)
File "/home/llacheny/.local/lib/python2.7/site-packages/scapy/sendrecv.py", line 620, in sniff
r = prn(p)
File "probemon.py", line 57, in packet_callback
logger.info(delimiter.join(fields))
UnicodeDecodeError: 'ascii' codec can't decode byte 0xb6 in position 28: ordinal not in range(128)

It occurs with SSIDs using non ascii characters.
The following change corrects the issue :
logger.info(delimiter.join([f.decode("utf-8") for f in fields]))

[AshwinKrishn]

@LaurentLacheny You have not enabled the monitor mode to your wifi chip.
if you see this

$iwconfig wlan0 -> "mode : managed"

run these

$sudo ifconfig wlan0 down
$sudo iwconfig wlan0 mode monitor
$sudo ifconfig wlan0 up
Optional 👍 if you run $iwconfig wlan0 you will see "mode : monitor"
now run the program.