When I execute LaunchKernels[] or Kernels[], I get the following errors.The output of Kernels[] is {}.
"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.