Plugin updated from 5.7 to 5.9

Any Job we start, Console Output shows "Node Not Found" and Planned Host to Run On is not discovered.
Running as SYSTEM
Building remotely on SRVQLTYC01 (ALM) in workspace c:\Jenkinsdev\workspace\UFT-Autorizaciones
[WS-CLEANUP] Deleting project workspace...
[WS-CLEANUP] Deferred wipeout is used...
[WS-CLEANUP] Done
No emails were triggered.
[UFT-Autorizaciones] $ c:\Jenkinsdev\workspace\UFT-Autorizaciones\HpToolsLauncher.exe -paramfile props23102019150056211.txt
"Started..."
Timeout is set to: -1
Run mode is set to: RUN_PLANNED_HOST
Unable to retrieve test set folder: Node not found.
============================================================================
Starting test set execution
Test set name: BLUA_Analitica, Test set id: 501
Test 1: [1]LOPD will run on host:
Test 2: [1]Preguntas Frecuentes will run on host:
Test 3: [1]Solicitud will run on host:
Problem while running TestSet: Excepci¢n de HRESULT: 0x80040459
"Scheduler started at:23/10/2019 15:01:01
-------------------------------------------------------------------------------------------------------Excepci¢n no controlada: System.ArgumentNullException: El valor no puede ser nulo.
Nombre del par metro: Current test set is null.
en HpToolsLauncher.AlmTestSetsRunner.SetTestResults(ITSTest currentTest, IExecutionStatus executionStatus, ITestSet targetTestSet, TestRunResults activeTestDesc, TestSuiteRunResults runDesc, String testPath, String abortFilename)
en HpToolsLauncher.AlmTestSetsRunner.RunTestSet(String tsFolderName, String tsName, String testParameters, Double timeout, QcRunMode runMode, String runHost, Boolean isFilterSelected, String filterByName, List`1 filterByStatuses, TestStorageType testStorageType)
en HpToolsLauncher.AlmTestSetsRunner.Run()
en HpToolsLauncher.Launcher.Run()
en HpToolsLauncher.Program.Main(String[] args)
Recording test results
None of the test reports contained any result
RunResultRecorder: didn't find any test results to record
Email was triggered for: Always
Sending email for trigger: Always
Request made to compress build log
Sending email to: cert.calidad@sanitas.es
Finished: SUCCESS

However, if we specify "HOST" in Job Configuration, the job can be executed.

This didn't happen in 5.7 version.