/opt/vmware/vcloud-director/logs/vcloud-container-debug.log
similar to:| ERROR | vim-proxy-activity-pool-123 | FutureUtil | Failed to send add VM to VM group request to VC | requestId=<REQUEST_UUID>,request=POST https://<VCD_URL>/api/vdc/<ORG_VDC_UUID>/action/createVm,requestTime=<REQUEST_TIME>,remoteAddress=<CLIENT_ADDRESS>,userAgent=<USER_AGENT>,accept=application/*+xml;version 37.0 vcd=<VCD_UUID>,task=<TASK_UUID> activity=(com.vmware.vcloud.backendbase.management.system.TaskActivity,urn:uuid:<TASK_UUID>) activity=(com.vmware.vcloud.vdc.impl.ComposeRecomposeVAppActivity,urn:uuid:) activity=(com.vmware.vcloud.vdc.impl.CreateStoredVmActivity,urn:uuid:) activity=(com.vmware.vcloud.fabric.storage.storedVm.impl.CreateFromConfigActivity,urn:uuid:) activity=(com.vmware.vcloud.val.internal.impl.CreateVmActivity,urn:uuid:)
com.vmware.vcloud.api.presentation.service.InternalServerErrorException: Reconfiguration of vmGroups: [<VM_GROUP_NAME>] timed out for cluster [vcId=<VCENTER_UUID>, moref=<CLUSTER_MOREF>]
at com.vmware.vcloud.val.internal.impl.ReconfigureVmGroupActivity$FinalPhase.invoke(ReconfigureVmGroupActivity.java:629)
at com.vmware.vcloud.activity.executors.ActivityRunner.runPhase(ActivityRunner.java:175)0
This issue is resolved in Cloud Director 10.5, 10.4.2.2, and 10.3.3.4 which are available here: Download VMware Cloud Director.