Error after impacket installed

[amvinayak]

File "./checker.py", line 56, in
recvPkt = conn.send_trans(pack('<H', TRANS_PEEK_NMPIPE), maxParameterCount=0xffff, maxDataCount=0x800)
File "/mnt/hgfs/OSCP/5/MS17-010/mysmb.py", line 262, in send_trans
self.send_raw(self.create_trans_packet(setup, param, data, mid, maxSetupCount, totalParameterCount, totalDataCount, maxParameterCount, maxDataCount, pid, tid, noPad))
File "/mnt/hgfs/OSCP/5/MS17-010/mysmb.py", line 259, in create_trans_packet
return self.create_smb_packet(transCmd, mid, pid, tid)
File "/mnt/hgfs/OSCP/5/MS17-010/mysmb.py", line 229, in create_smb_packet
req = str(pkt)