Running version: 1.4.12.10#dev
Python version: 2.7.18
Operating system: Linux-5.4.0-kali3-amd64-x86_64-with-debian-kali-rolling
Command line: sqlmap.py -u ************************************ -p id --os=windows --os-shell --risk=3 --flush-session
Technique: UNION
Back-end DBMS: MySQL (fingerprinted)

Traceback (most recent call last):
  File "sqlmap.py", line 215, in main
    start()
  File "lib/core/decorators.py", line 78, in _
    result = f(*args, **kwargs)
  File "lib/controller/controller.py", line 704, in start
    action()
  File "lib/controller/action.py", line 221, in action
    conf.dbmsHandler.osShell()
  File "plugins/generic/takeover.py", line 85, in osShell
    self.initEnv(web=web)
  File "lib/takeover/abstraction.py", line 200, in initEnv
    self.webInit()
  File "lib/takeover/web.py", line 393, in webInit
    if not self.webUpload(backdoorName, posixToNtSlashes(directory) if Backend.isOs(OS.WINDOWS) else directory, content=backdoorContent):
  File "lib/takeover/web.py", line 114, in webUpload
    return self._webFileStreamUpload(stream, destFileName, directory)
  File "lib/takeover/web.py", line 135, in _webFileStreamUpload
    page, _, _ = Request.getPage(url=self.webStagerUrl, multipart=multipartParams, raise404=False)
  File "lib/request/connect.py", line 576, in getPage
    conn = _urllib.request.urlopen(req)
  File "/usr/lib/python2.7/urllib2.py", line 154, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python2.7/urllib2.py", line 427, in open
    req = meth(req)
  File "thirdparty/multipart/multipartpost.py", line 64, in http_request
    boundary, data = self.multipart_encode(v_vars, v_files)
  File "thirdparty/multipart/multipartpost.py", line 83, in multipart_encode
    boundary = choose_boundary()
  File "lib/core/compat.py", line 189, in choose_boundary
    return uuid.uuid4().hex
AttributeError: 'module' object has no attribute 'uuid4'