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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Ui : Improve the error log message","articleBody":"### The required feature described as a wish\n\nAs a Admin /Operator I would like to  see the correct error message if the instance conversion from vmware to kvm fails \n\nSteps to reproduce the issue \n\n1. Select a kvm host which does not have the virt-v2v installed \n\nThe following exception is thrown in the UI \u003e this not clear to the end user \n\n\u003cimg width=\"429\" height=\"242\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/418c227d-a1c7-4dd3-badc-d4e767d099de\" /\u003e\n\n\n2. On checking the logs \n\n```\n\n2026-04-13 06:32:30,120 ERROR [o.a.c.v.UnmanagedVMsManagerImpl] (API-Job-Executor-85:[ctx-de7abe65, job-145, ctx-d94fe1bb]) (logid:03b36fd8) The host Host {\"id\":2,\"name\":\"ref-trl-6210-k-Mr9-kiran-chavala-kvm2\",\"type\":\"Routing\",\"uuid\":\"ee80e6e2-2e52-4dce-b554-6af6027303c6\"} doesn't support conversion of instance i-2-14-VM from VMware to KVM due to: Cannot convert the instance from VMware using VDDK on host 10.1.34.207. Please make sure virt-v2v, nbdkit-vddk and a valid VDDK library directory are available on the host.\n2026-04-13 06:32:30,120 ERROR [o.a.c.v.UnmanagedVMsManagerImpl] (API-Job-Executor-85:[ctx-de7abe65, job-145, ctx-d94fe1bb]) (logid:03b36fd8) Error importing VM: The host Host {\"id\":2,\"name\":\"ref-trl-6210-k-Mr9-kiran-chavala-kvm2\",\"type\":\"Routing\",\"uuid\":\"ee80e6e2-2e52-4dce-b554-6af6027303c6\"} doesn't support conversion of instance i-2-14-VM from VMware to KVM due to: Cannot convert the instance from VMware using VDDK on host 10.1.34.207. Please make sure virt-v2v, nbdkit-vddk and a valid VDDK library directory are available on the host. com.cloud.utils.exception.CloudRuntimeException: The host Host {\"id\":2,\"name\":\"ref-trl-6210-k-Mr9-kiran-chavala-kvm2\",\"type\":\"Routing\",\"uuid\":\"ee80e6e2-2e52-4dce-b554-6af6027303c6\"} doesn't support conversion of instance i-2-14-VM from VMware to KVM due to: Cannot convert the instance from VMware using VDDK on host 10.1.34.207. Please make sure virt-v2v, nbdkit-vddk and a valid VDDK library directory are available on the host.\n        at org.apache.cloudstack.vm.UnmanagedVMsManagerImpl.checkConversionSupportOnHost(UnmanagedVMsManagerImpl.java:2110)\n        at org.apache.cloudstack.vm.UnmanagedVMsManagerImpl.importUnmanagedInstanceFromVmwareToKvm(UnmanagedVMsManagerImpl.java:1704)\n        at org.apache.cloudstack.vm.UnmanagedVMsManagerImpl.baseImportInstance(UnmanagedVMsManagerImpl.java:1366)\n        at org.apache.cloudstack.vm.UnmanagedVMsManagerImpl.importVm(UnmanagedVMsManagerImpl.java:1517)\n\n\n2026-04-13 06:32:30,130 ERROR [c.c.a.ApiAsyncJobDispatcher] (API-Job-Executor-85:[ctx-de7abe65, job-145]) (logid:03b36fd8) Unexpected exception while executing org.apache.cloudstack.api.command.admin.vm.ImportVmCmd java.lang.NullPointerException: Cannot invoke \"com.cloud.vm.ImportVMTaskVO.setUpdated(java.util.Date)\" because \"importVMTaskVO\" is null\n        at org.apache.cloudstack.vm.ImportVmTasksManagerImpl.updateImportVMTaskErrorState(ImportVmTasksManagerImpl.java:166)\n        at org.apache.cloudstack.vm.UnmanagedVMsManagerImpl.importUnmanagedInstanceFromVmwareToKvm(UnmanagedVMsManagerImpl.java:1768)''\n\n```\n\nExpected behaviour \n\nThe following error message should be shown in the ui \n\n```\n Cannot convert the instance from VMware using VDDK on host 10.1.34.207. Please make sure virt-v2v, nbdkit-vddk and a valid VDDK library directory are available on the host.\n```","author":{"url":"https://github.com/kiranchavala","@type":"Person","name":"kiranchavala"},"datePublished":"2026-04-13T07:35:51.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/13007/cloudstack/issues/13007"}