TypeError: ord() expected a character, but string of length 0 found

[greaterthanstar]

Traceback (most recent call last):
File "whoishere.py", line 155, in
sniff(iface=interface, prn = PacketHandler, store=0)
File "/usr/local/lib/python2.7/dist-packages/scapy/sendrecv.py", line 972, in sniff
sniffer._run(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/scapy/sendrecv.py", line 925, in _run
session.on_packet_received(p)
File "/usr/local/lib/python2.7/dist-packages/scapy/sessions.py", line 47, in on_packet_received
result = self.prn(pkt)
File "whoishere.py", line 133, in PacketHandler
PrintInfo(pkt)
File "whoishere.py", line 107, in PrintInfo
db = -(256-ord(pkt.notdecoded[-4:-3]))
TypeError: ord() expected a character, but string of length 0 found

[greaterthanstar]

This is right upon starting it and after it displays the conf info

[loviuz]

You can change:

db = -(256-ord(pkt.notdecoded[-4:-3]))

with:

db = pkt.dBm_AntSignal

It should work.