Hello, everyone! I updated my Mathematica to 12.2 (Windows) recently and encountered with a strange issue at launching lightweightgrid kernels.

In[3]:= LaunchKernels["http://192.168.30.202:3737/\
WolframLightweightGrid/"]

During evaluation of In[3]:= LightweightGridClient`RemoteKernelOpen::lwgclient: Cannot create a component needed by LightweightGridClient`RemoteKernelOpen. Remove older version of the LightweightGridClient package.

Out[3]= $Failed

I cleared up all directories in AppData and ProgramData to prevent conflict between some addons. It did not work.

Lightweightgrid manager window also doesn't work either. My server is undiscoverable

However, the port 3737 is open and accessing to it has no issue

In[5]:= Import["http://192.168.30.202:3737/WolframLightweightGrid/"]

Out[5]= "Log In   |  About   |  Help      

Servers  
   Ping
  Select:   All , None    


    \[Bullet]   192.168.30.202          

  Status   Kernel Settings   Server Settings   Licensing   Logging    
 Current information about the running of the server.

  Kernels   |  Ping    


Kernels  

  Actions      

Kernels (0 total)
Link Name Actions PID Service Username IP Status Launched Age

  No kernels running.
    Sun Mar 21 14:41:40 MSK 2021           © 2015 Wolfram Research \
Inc."

Any ideas?

Thanks in advance