Python 3中LogonUserW中的访问冲突

Question

我正在为某人编写Python3脚本，该脚本通过ctypes利用advapi dll及其LogonUserW函数。运行代码时在__init__函数中dll_location = find_library("advapi32");if (dll_location == None):    raise FileNotFoundErroradv_dll = WinDLL(dll_location);#gets the pointer to the functionlogonUser = adv_dll.LogonUserW;self.logonUser = logonUser登录（用户名，域，密码）功能#Sets the parameters to call the DLLloginType = DWORD(2)loginProvider = DWORD(0)handle = PHANDLE()user = LPCSTR(username.encode());pw = LPCSTR(password.encode());dom = LPCSTR(domain.encode());rescode = self.logonUser(user, dom, pw, loginType, loginProvider, handle);它引发 OSError: exception: access violation writing 0x0000000000000000任何想法可能导致错误的原因以及如何解决？PS：是的，我知道我不遵循PEP 8的变量名，我通常是Java程序员。