Attribute error while parsing pcap file

[S-MaN14th]

File can be found at https://goo.gl/AWATmN $captcp statistic file.pcap Traceback (most recent call last): File "/usr/bin/captcp", line 5868, in sys.exit(captcp.run()) File "/usr/bin/captcp", line 5854, in run ret = classinstance.process_final() File "/usr/bin/captcp", line 4807, in process_final self.process_final_data() File "/usr/bin/captcp", line 4801, in process_final_data self.rexmt_final(connection.sc1) File "/usr/bin/captcp", line 4485, in rexmt_final sc.user_data["tl-ps-avg"] = "%.2f" % numpy.mean(sc.user_data["_tl_pkt_sizes"]) AttributeError: 'NoneType' object has no attribute 'mean'