facing error during migration during kentico upgrade 12 to xbk

2025/06/11 12:55 PM

Process terminated. Assertion failed. migratedDocuments.Count > 0 at Migration.Tool.Source.Handlers.MigratePagesCommandHandler.MigratePages()

Here is the full error log
Process terminated. Assertion failed. migratedDocuments.Count > 0 at Migration.Tool.Source.Handlers.MigratePagesCommandHandler.MigratePages() in D:\xperience-by-kentico-kentico-migration-tool-master\xperience-by-kentico-kentico-migration-tool-master\KVA\Migration.Tool.Source\Handlers\MigratePagesCommandHandler.cs:line 316 at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.SetExistingTaskResult(Task1 task, TResult result) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult() at Migration.Tool.Source.Handlers.MigratePagesCommandHandler.GenerateDefaultPageUrlPath(ICmsTree ksTree, WebPageItemInfo webPageItemInfo) in D:\xperience-by-kentico-kentico-migration-tool-master\xperience-by-kentico-kentico-migration-tool-master\KVA\Migration.Tool.Source\Handlers\MigratePagesCommandHandler.cs:line 895 at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.SetExistingTaskResult(Task1 task, TResult result) at CMS.Websites.Routing.WebPageUrlManager.GeneratePageUrlPath(WebPageItemInfo webPageItem, String webPageSlug, VersionStatus versionStatus, CancellationToken cancellationToken) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.ExecutionContextCallback(Object s) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext() at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.SetExistingTaskResult(Task1 task, TResult result) at CMS.Websites.Routing.WebPageUrlPathsGenerator.Generate(WebPageItemInfo webPageItem, String webPageSlug, VersionStatus versionStatus, CancellationToken cancellationToken) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.ExecutionContextCallback(Object s) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext() at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.SetExistingTaskResult(Task1 task, TResult result) at CMS.DataEngine.GeneralConnection.ExecuteReaderAsync(QueryParameters query, CommandBehavior commandBehavior, CancellationToken cancellationToken) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.ExecutionContextCallback(Object s) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext() at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.SetExistingTaskResult(Task1 task, TResult result) at CMS.DataEngine.AbstractDataConnection.ExecuteReaderAsync(String queryText, QueryDataParameters queryParams, QueryTypeEnum queryType, CommandBehavior commandBehavior, CancellationToken cancellationToken) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.ExecutionContextCallback(Object s) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext() at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread) at System.Threading.Tasks.ThreadPoolTaskScheduler.TryExecuteTaskInline(Task task, Boolean taskWasPreviouslyQueued) at System.Threading.Tasks.TaskScheduler.TryRunInline(Task task, Boolean taskWasPreviouslyQueued) at System.Threading.Tasks.TaskContinuation.InlineIfPossibleOrElseQueue(Task task, Boolean needsProtection) at System.Threading.Tasks.ContinueWithTaskContinuation.Run(Task completedTask, Boolean canInlineContinuationTask) at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) at System.Threading.Tasks.Task1.TrySetResult(TResult result) at System.Threading.Tasks.UnwrapPromise1.TrySetFromTask(Task task, Boolean lookForOce) at System.Threading.Tasks.UnwrapPromise`1.ProcessInnerTask(Task task) at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread) at System.Threading.ThreadPoolWorkQueue.Dispatch() at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()

Tags:
Migration / upgrade C#

Answers

2025/06/11 1:32 PM
Accepted answer

Since this is a question about one of our fully supported and open-source integrations I would recommend you open an issue on the GitHub repository directly.

Also, this discussion isn't related to the Kentico Community Portal, Kentico MVPs, or Community members so I'll remove those tags 😉 to improve the search experience here for others.

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