Why I have occasionally error when starting workers on MATLAB R2019b (PCT 7.1, Windows Server 2019)

I have job manager "testjmanager" on host "test2" and start workers on remote host "test" to connect to it sending command on remote host ("test") within PowerShell:

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Invoke-Command -ComputerName test -ScriptBlock {"cd 'C:\Program Files\MATLAB\R2019b\toolbox\parallel\bin';.\mjs install;.\mjs stop -clean;.\mjs start;.\startworker -num 8 -name worker -jobmanager testjmanager -jobmanagerhost test2"}

Periodically (not every time) I get an error when running workers on a remote host "test" with the following content (mjs-service.log from remote host "test" attached):

The mjs service on the host test.domain.local
    + CategoryInfo          : NotSpecified: (The mjs service...test.domain.local:String) [], RemoteException
    + FullyQualifiedErrorId : NativeCommandError
    + PSComputerName        : test
 
returned the following error:
NotSpecified: (:String) [], RemoteException
Problem starting the MATLAB worker.
NotSpecified: (:String) [], RemoteException
The cause of the problem is:
NotSpecified: (:String) [], RemoteException
============================================================================
   couldn't delete file: C:\Windows\TEMP\MJS\Checkpoint\test.domain.local_phoenix_log\Snapshot.1
NotSpecified: (   :String) [], RemoteException
   This is causing:
NotSpecified: (   :String) [], RemoteException
   Check the mjs log file
   C:\Windows\TEMP\MJS\Log\mjs-service.log"
   on the host test.domain.local
   for information about the cause of the exit.
NotSpecified: (   :String) [], RemoteException
   This is causing:
NotSpecified: (   :String) [], RemoteException
   The worker group exited unexpectedly while starting.
NotSpecified: (   :String) [], RemoteException
   This is causing:
NotSpecified: (   :String) [], RemoteException
   Problem starting the worker group process.

Can you please explain the possible causes of this error and give an advice on how to resolve it?

Thank you!