Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

InvalidOperationException

See original GitHub issue

I know that it is hard to fix issue when it is not reproducible but this is one of that case where i can not reproduce this error. Our crawler works 2-3 days and stop permanently and gives below exception. I have to restart application when this is happened.

AngleSharp version is 9.9. .Net version is 4.6.1

Let me know if is there anything you need to know more.

System.InvalidOperationException: Exception of type 'System.InvalidOperationException' was thrown.
   at System.Runtime.CompilerServices.ConditionalWeakTable`2.VerifyIntegrity()
   at System.Runtime.CompilerServices.ConditionalWeakTable`2.Add(TKey key, TValue value)
   at AngleSharp.Dom.Node..ctor(Document owner, String name, NodeType type, NodeFlags flags)
   at AngleSharp.Dom.Document..ctor(IBrowsingContext context, TextSource source)
   at AngleSharp.Dom.Html.HtmlDocument.<LoadAsync>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at AngleSharp.BrowsingContextExtensions.<OpenAsync>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NinjaSpider.Engine.WebsiteCrawler.<GetHtmlDocumentAsync>d__28.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NinjaSpider.Engine.WebsiteCrawler.<GetPageInfoAsync>d__15.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NinjaSpider.Engine.SpiderQueue.<CrawlPageAsync>d__19.MoveNext()

Issue Analytics

State:
Created 6 years ago
Comments:17 (8 by maintainers)

Top GitHub Comments

1reaction

ushenkodmitrycommented, May 5, 2017

Nothing special. Just use “using”:

using(IDocument document = await BrowsingContext.New().OpenAsync(r => r.Address(uri).Content(content)))
{
}

0reactions

FlorianRapplcommented, May 23, 2017

Thanks for the info!

Top Results From Across the Web

InvalidOperationException Class (System)

InvalidOperationException is used in cases when the failure to invoke a method is caused by reasons other than invalid arguments.

C# Exception Guide: InvalidOperationException

The InvalidOperationException exception type is thrown when a method call is invalid for the object's current state.

Why is this code throwing an InvalidOperationException?

As you can see here, the First method throws an InvalidOperationException when the sequence on which it is called is empty.

FIX: You receive a System.InvalidOperationException ...

InvalidOperationException exception when you start a .NET Framework-based application that runs Extensible Object Markup Language workflows on a computer ...

Type: System.InvalidOperationException

InvalidOperationException is used in cases when the failure to invoke a method is caused by reasons other than invalid arguments.