[ovirt-users] Error after restoring hosted-engine

Hello, after restoring hosted-engine from a backup, i have several problems. Let's start with the first, other threads for others... I can't see hosted-engine vm in vm list. Looking at engine log, i see the following: 2022-07-05 16:51:26,330+02 WARN [org.ovirt.engine.core.vdsbroker.vdsbroker.VdsBrokerObjectsBuilder] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-49) [4c8e10ac] null architecture type, replacing with x86_64, VM [HostedEngine] 2022-07-05 16:51:26,332+02 INFO [org.ovirt.engine.core.bll.HostedEngineImporter] (EE-ManagedThreadFactory-engine-Thread-4932) [4c8e10ac] Try to import the Hosted Engine VM 'VM [HostedEngine]' 2022-07-05 16:51:26,334+02 INFO [org.ovirt.engine.core.bll.exportimport.ImportVmCommand] (EE-ManagedThreadFactory-engine-Thread-4932) [752aa465] Lock Acquired to object 'EngineLock:{exclusiveLocks='[HostedEngine=VM_NAME, 4daba166-3da4-4220-8a56-5ddadf83015d=VM]', sharedLocks='[4daba166-3da4-4220-8a56-5ddadf83015d=REMOTE_VM]'}' 2022-07-05 16:51:26,335+02 ERROR [org.ovirt.engine.core.bll.exportimport.ImportVmCommand] (EE-ManagedThreadFactory-engine-Thread-4932) [752aa465] Error during ValidateFailure.: java.lang.NullPointerException at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.validator.VmValidator.isBiosTypeSupported(VmValidator.java:467) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.exportimport.ImportVmCommandBase.validate(ImportVmCommandBase.java:158) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.exportimport.ImportVmCommand.validate(ImportVmCommand.java:220) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.CommandBase.internalValidateInTransaction(CommandBase.java:824) at org.ovirt.engine.core.utils//org.ovirt.engine.core.utils.transaction.TransactionSupport.executeInSuppressed(TransactionSupport.java:140) at org.ovirt.engine.core.utils//org.ovirt.engine.core.utils.transaction.TransactionSupport.executeInSuppressed(TransactionSupport.java:157) ........ ........ 2022-07-05 16:51:26,335+02 INFO [org.ovirt.engine.core.bll.exportimport.ImportVmCommand] (EE-ManagedThreadFactory-engine-Thread-4932) [752aa465] Lock freed to object 'EngineLock:{exclusiveLocks='[HostedEngine=VM_NAME, 4daba166-3da4-4220-8a56-5ddadf83015d=VM]', sharedLocks='[4daba166-3da4-4220-8a56-5ddadf83015d=REMOTE_VM]'}' 2022-07-05 16:51:26,335+02 ERROR [org.ovirt.engine.core.bll.HostedEngineImporter] (EE-ManagedThreadFactory-engine-Thread-4932) [752aa465] Failed importing the Hosted Engine VM Is there any way to solve this issue? Web management interface is working except for the fact that i can't add new nodes and forget a storage domain which is no more existent. Thank you, Roberto