Issue TypeError: unsupported operand type(s) for ^: 'int' and 'NoneType'

[Batman781]

With a memory dump froma ESX6.7 snapshot of 2 GB RAM Windows 10 x64 version 18362, I'm getting following error:

[root@localhost volatility]# python vol.py -f /opt/dumps/Win10Untrusted-Snapshot14.vmem --profile=Win10x64_18362 psscan
Volatility Foundation Volatility Framework 2.6.1
Offset(P)          Name                PID   PPID PDB                Time created                   Time exited
------------------ ---------------- ------ ------ ------------------ ------------------------------ ------------------------------
WARNING : volatility.debug    : Cannot find nt!ObGetObjectType
WARNING : volatility.debug    : Cannot find nt!ObGetObjectType
Traceback (most recent call last):
  File "vol.py", line 192, in <module>
    main()
  File "vol.py", line 183, in main
    command.execute()
  File "/opt/volatility/volatility/commands.py", line 147, in execute
    func(outfd, data)
  File "/opt/volatility/volatility/plugins/filescan.py", line 428, in render_text
    for eprocess in data:
  File "/opt/volatility/volatility/poolscan.py", line 252, in scan
    skip_type_check = skip_type_check)
  File "/opt/volatility/volatility/plugins/overlays/windows/windows.py", line 1258, in get_object
    return self.get_object_top_down(struct_name, object_type, skip_type_check)
  File "/opt/volatility/volatility/plugins/overlays/windows/windows.py", line 1231, in get_object_top_down
    header.get_object_type() == object_type):
  File "/opt/volatility/volatility/plugins/overlays/windows/win7.py", line 155, in get_object_type
    return self.type_map.get(int(self.TypeIndex), '')
  File "/opt/volatility/volatility/plugins/overlays/windows/win10.py", line 330, in TypeIndex
    return ((addr >> 8) ^ cook ^ indx) & 0xFF
TypeError: unsupported operand type(s) for ^: 'int' and 'NoneType'

[gleeda]

this is duplicate of issue #436