JEA v2 based discovery return error during WMIFetch $computer variable is empty

[OlegKrylov]

Trying to implement JEAv2 discovery, and always getting the same error in the agent log on the MID server
After running  this part

execute(& { fetchMultipleWMI -wmi "false"  -output_format "json"  -WMI_FetchData "root\virtualization\v2\Msvm_ComputerSystem.Name,HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Tcpip/Parameters/Domain,HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Tcpip/Parameters/Hostname,root\MSCluster\MSCluster_Resource.PrivateProperties,root\MSCluster\MSCluster_Resource.Name,root\MSCluster\MSCluster_Node.Name,root\MSCluster\MSCluster_Cluster.Name,root\MSCluster\MSCluster_ClusterToResource.GroupComponent,root\MSCluster\MSCluster_ClusterToResource.PartComponent,root\MSCluster\MSCluster_ClusterToNode.Antecedent,root\MSCluster\MSCluster_ClusterToNode.Dependent,root\virtualization\Msvm_ComputerSystem.Name,root\MSCluster\MSCluster_Resource.Type,Win32_ComputerSystem.Domain,Win32_ComputerSystem.Name,Win32_OperatingSystem.Caption,Win32_OperatingSystem.Version" ; } | Out-String | ForEach-Object { [Console]::WriteLine($_) })

 Getting this:

 -----START OF STDERR-----
 -----START OF STDOUT-----
<SNC_LOG>2026-02-26 15:34:32 Running CreateNewPSSession without explicit credential</SNC_LOG>
<SNC_LOG>2026-02-26 15:34:32 Running create session script: New-PSSession -ComputerName  -Port 5986 -UseSSL -Authentication NegotiateWithImplicitCredential</SNC_LOG>
New-PSSession : Missing an argument for parameter 'ComputerName'. Specify a parameter of type 'System.String[]' and try again.
At line:1 char:15
+ New-PSSession -ComputerName  -Port 5986 -UseSSL -Authentication Negot ...
+               ~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [New-PSSession], ParameterBindingException
   + FullyQualifiedErrorId : MissingArgument,Microsoft.PowerShell.Commands.NewPSSessionCommand
 
 executeRemote : Failed to create remote Powershell Session
 At C:\Servicenow\ServiceNow MID Server MIDServerName\agent\scripts\PowerShell\WMIFetch.psm1:1122 char:16

 + ...      $rtn = executeRemote -computer "$computer" -scriptBlock "$script ...
 +                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
    + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,executeRemote
  
 {
 }

 
 -----END OF STDERR-----
 -----END OF STDOUT-----

But earlier in the same session I could see how $computer variable was assigned by target server FQDN (I don't have IP address in the WinRM Trusted Hosts).
Looks like $computer variable was cleared somehow... How I could understand why? 

Thanks a lot in advance!