Error restoring AdventureWorks2016_EXT.bak and AdventureWorksDW2016_EXT.bak

Best regards,
I downloaded the AdventureWorks2016_EXT.bak and AdventureWorksDW2016_EXT.bak files. However, when trying to restore the backups, they are blocked by 35% and generate the following error message, and then appear in the object explorer in Suspect state:

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Restore of database 'AdventureWorks2016_EXT' failed. (Microsoft.SqlServer.Management.RelationalEngineTasks)

Program Location:
   at Microsoft.SqlServer.Management.RelationalEngineTasks.RestoreDatabaseTaskFormComponent.PerformTask (ITaskExecutionContext context)
   at Microsoft.SqlServer.Management.RelationalEngineTasks.RestoreDatabaseTaskFormComponent.Perform (ITaskExecutionContext context)
   at Microsoft.SqlServer.Management.TaskForms.TaskExecutionManager.ExecuteTaskSequence (ISfcScriptCollector collector)

An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.SmoExtended)

Program Location:
   at Microsoft.SqlServer.Management.Smo.RestorePlan.Execute ()
   at Microsoft.SqlServer.Management.RelationalEngineTasks.RestoreDatabaseTaskFormComponent.PerformTask (ITaskExecutionContext context)

An error occurred during recovery, preventing the database 'AdventureWorks2016_EXT' (11: 0) from restarting. Diagnose the recovery errors and fix them, or restore from a known good backup. If errors are not corrected or expected, contact Technical Support. (.Net SqlClient Data Provider)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&EvtSrc=MSSQLServer&EvtID=3414&LinkId=20476

Server Name: C-JRAMIRJA3
Error Number: 3414
Severity: 21
State: 4
Line Number: 1

Program Location:
   at Microsoft.SqlServer.Management.Common.ConnectionManager.ExecuteTSql (ExecuteTSqlAction action, Object execObject, DataSet fillDataSet, Boolean catchException)
   at Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery (String sqlCommand, ExecutionTypes executionType, Boolean retry)

The files that are not extended, AdventureWorks2016.bak and AdventureWorksDW2016.bak, are restored without problems.

Could you please help me by focusing on the solution?

Beginnen Sie damit, die Wiederherstellung von AdventureWorks2016_EXT.bak und AdventureWorksDW2016_EXT.bak in SQL Server zu reproduzieren und die mit error 3414 verbundenen Wiederherstellungsfehler zu untersuchen. Vergleichen Sie die erweiterten Backups mit AdventureWorks2016.bak und AdventureWorksDW2016.bak, die erfolgreich wiederhergestellt werden; als abgeschlossen gilt die Arbeit, wenn die Ursache identifiziert und entweder eine bestätigte Lösung für die Wiederherstellung oder ein Backup-Problem dokumentiert wurde.