name 'cur' is not defined

[nazpetrov]

Hi all!
thanks to well-known solutions, i solved some issues and get success.
but now, when i started grgsm-livemon and hex dataflow begin, in window with IMSI-catcher first line with necessary data appers and IMSI-catcher stop immediately with this error:

Traceback (most recent call last):
  File "simple_IMSI-catcher.py", line 612, in <module>
    sniff(iface=options.iface, filter="port {} and not icmp and udp".format(options.port), prn=find_imsi_from_pkt, store=0)
  File "/usr/lib/python3/dist-packages/scapy/sendrecv.py", line 972, in sniff
    sniffer._run(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/scapy/sendrecv.py", line 925, in _run
    session.on_packet_received(p)
  File "/usr/lib/python3/dist-packages/scapy/sessions.py", line 47, in on_packet_received
    result = self.prn(pkt)
  File "simple_IMSI-catcher.py", line 563, in find_imsi_from_pkt
    find_imsi(udpdata)
  File "simple_IMSI-catcher.py", line 492, in find_imsi
    t.register_imsi(gsm.arfcn, imsi1, imsi2, tmsi1, tmsi2, p)
  File "simple_IMSI-catcher.py", line 278, in register_imsi
    self.pfields(str(n), tmsi1, tmsi2, imsi1, str(self.mcc), str(self.mnc), str(self.lac), str(self.cell), p)
  File "simple_IMSI-catcher.py", line 211, in pfields
    if cur:
NameError: name 'cur' is not defined

What i am doing:
First run
sudo python3 simple_IMSI-catcher.py -s.
then in a new window run
grgsm_scanner,
find stations. Then with this information run grgsm_livemon, for example
grgsm_livemon -f 950.0M --args=rtl.
Then, after up-down scrolling frequency scrollbar, i find frequency where data starts to flow.
And then that trouble with IMSI-catcher window.

Sorry for my english and Thanks for your attention!

[nazpetrov]

Thank you!!!