WSL package kali-win-kex cannot setup VNC server after update

I am using Kali Linux on Windows under WSL2 environment and my OS version is:


```
Linux 4.19.104-microsoft-standard x86_64
```


I am using the package kali-win-kex to access Kali Linux through GUI. Today after I executed `sudo apt update` and `sudo apt dist-upgrade`, `kali-win-kex` cannot start a VNC server correctly.


Executing `kex` or `kex --status` gives the following error message:


```
Error connecting to the KeX server.
Please try "kex start" to start the service.
If the server fails to start, please try "kex kill" or restart your WSL2 session and try again.
```


However, if I launch a VNC server by executing `vncserver`, `kex --status` could list that server.


```
Win-KeX server sessions:


X DISPLAY # RFB PORT # PROCESS ID SERVER
:1 5901 9458 Xtigervnc
```


I could also connect to that server using `kex --esm` or `kex --sl`. However, `kex` or `kex --win` won't work. There is an error message by TigerVNC in Windows which says "No matching security types".