When I execute LaunchKernels[] or Kernels[], I get the following errors.The output of Kernels[] is {}. enter image description here "WSTPServer" is not among the known evaluation environments {Session, RemoteSession, FrontEnd, Subkernel, WebEvaluation, WebAPI, Scheduled, Script, Kernel

In version 12, it works well and I use it to run the program on the server. Now it's fine to run on a single core, for example $MachineName.But parallel computing doesn't work anymore. For example, ParallelMap[Sin, Range[10]] does not work. enter image description here



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