Cannot create a component needed by LightweightGridClient`RemoteKernel

Questions
,
1

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

Снимокэкрана2021-03-21143817.png
Снимокэкрана2021-03-21143817.png792×562 19.3 KB

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

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