Error migrate test plans, TF401320: Rule Error for field Description

[alvimrodrigo]

Hello, I'm using these steps here to be able to migrate the test plans, however, when I get to step 4. Rebuild test plans and test suites, using the 'TfsTestPlansAndSuitesMigrationProcessor' processor, I get the following error:
https://nkdagility.com/learn/azure-devops-migration-tools/howto/migrating-plans-and-suits/

!! Check for latest version - We fix issues constantly - If not, please create a discussion on https://github.com/nkdAgility/azure-devops-migration-tools/discussions so we can get this fixed !!
[11:22:01 FTL] [16.0.3] Error while running TfsTestPlansAndSuitesMigrationProcessor
Microsoft.TeamFoundation.TestManagement.Client.TestManagementServerException: TF401320: Rule Error for field Description. Error code: Required, InvalidEmpty. ---> System.Web.Services.Protocols.SoapException: TF401320: Rule Error for field Description. Error code: Required, InvalidEmpty.
   --- Fim do rastreamento de pilha de exceções internas ---
   em Microsoft.TeamFoundation.Client.Channels.TfsHttpClientBase.HandleReply(TfsClientOperation operation, TfsMessage message, Object[]& outputs)
   em Microsoft.TeamFoundation.Client.Channels.TfsHttpClientBase.Invoke(TfsClientOperation operation, Object[] parameters, TimeSpan timeout, Object[]& outputs)
   em Microsoft.TeamFoundation.TestManagement.Client.TestManagementWebService4.CreateTestPlan(TestPlan testPlan, String teamProjectName, TestExternalLink[] links)
   em Microsoft.TeamFoundation.TestManagement.Client.TestPlan.SaveNewPlan()
   em Microsoft.TeamFoundation.TestManagement.Client.TestPlan.Save()
   em MigrationTools.Processors.TfsTestPlansAndSuitesMigrationProcessor.ProcessTestPlan(ITestPlan sourcePlan) na D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.TfsObjectModel\Processors\TfsTestPlansAndSuitesMigrationProcessor.cs:linha 864
   em MigrationTools.Processors.TfsTestPlansAndSuitesMigrationProcessor.InternalExecute() na D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.TfsObjectModel\Processors\TfsTestPlansAndSuitesMigrationProcessor.cs:linha 113
   em MigrationTools.Processors.Infrastructure.Processor.Execute() na D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools\Processors\Infrastructure\Processor.cs:linha 98

I have already added the description field to all test plans in the source project.
Do you know what it could be or give me some direction?