Null point Exceptions are there - exception

These are the error I am getting
All these red highlighted part are the error:

Well...as far as I can see you wanted to invoke a virtual method...anywhere.
And your exception says that it should point to NULL...which is ok I guess, because everywhere else would be fatal.

Related

Windows UIAutomation throwing confusing errors

I'm using Windows UIAutomation quite heavily and it works mostly well. But it's throwing some exceptions that I haven't been able to figure out.
The first of these is:
Exception thrown at 0x762D46D2 (KernelBase.dll) in MyApp.exe: 0x80040155: Interface not registered.
The offending section of code is the last line of:
IUIAutomationElementPtr element; //This is a valid element
IUIAutomationCacheRequestPtr cachePtr; //This is a valid cache pointer
IUIAutomationElement **first;
HRESULT hr = myControlWalker->GetFirstChildElementBuildCache(element, cachePtr, firstChild);
The second of these is:
Exception thrown at 0x762D46D2 (KernelBase.dll) in MyApp.exe: 0x40080202: WinRT transform error (parameters: 0x80040155, 0x80004002, 0x0000001D, 0x0565DB4C).
which happens at the same line of code as the previous.
And the last is:
Exception thrown at 0x762D46D2 (KernelBase.dll) in MyApp.exe: 0x8001010D: An outgoing call cannot be made since the application is dispatching an input-synchronous call.
once again, from the same line of code.
The program runs fine and it does what it needs to do, it just bothers me to have zillions of these exceptions being thrown left and right. Any suggestions?

Access violation, NotEnemy is 0xBF800000

I use cocos2d-x to do the game. After running my program for a while, the variable "NotEnemy" will always report the "access violation" error. NotEnemy is the variable I set in EventListenerPhysicsContact, always using cocos2d-x There will be errors like the title, all I want to know when there is such a mistake, is there any solution, I hope someone can tell me, right, NotEnemy I am assigned this way, auto NotEnemy=contact.getShapeB( )->getBody()->getNode();
I tried setting it to nullptr after using NotEnemy, but it didn't work. Now it generates a new error "Exception at 0x76EE35D2 (located in TankBattle.exe): Microsoft C++ Exception: std::exception, in memory Location 0x00C5F548.
There is an unhandled exception at 0x7640E6EB (ucrtbase.dll) (in TankBattle.exe): A critical program exit has been requested. ", used to be an error about access permissions conflicts, but they are all problems with NotEnemy, and they all appear in the "NotEnemy->SetPosition(Vec2(166,14))" statement.

What is the cause of FluentValidation Method Not Found exception?

I've got a Domain Driven Design solution and for some reason, I'm getting this exception at RunTime when the API call is made through GateWay:
One or more errors occurred. (Method not found: 'Void FluentValidation.AbstractValidator`1.When(System.Func`2<!0,Boolean>, System.Action)'.)
The error occurs as below:
I have solution like this:
The main 4 project I'm focusing on right now are:
Core.Model
Account.Api
Service.Api.Gateway
Web.ClientSite
Web.ClientSite makes request to Service.Api.Gateway which then calls Account.Api.
Note that Core.Model is referenced everywhere
VERY IMPORTANT: If I remove the reference of FluentValidation from Core.Model, the exception disappears.
I'm hoping these information is enough. Why do you think I'm getting this exception and how can I eliminate.
Looks like some of libs (ocelot) are incompatible with new changes in FluentValidation 8.1.2. Try to downgrade to FluentValidation before 8.1.2. Hope it helps
I got similar exception:
System.MissingMethodException : Method not found:
'FluentValidation.AssemblyScanner
FluentValidation.AssemblyScanner.FindValidatorsInAssembly(System.Reflection.Assembly)'
In my case I needed to upgrade the ediatR.Extensions.Microsoft.DependencyInjection and MediatR.Extensions.FluentValidation.AspNetCore packages as well to fix the issue.

AS3, Flash: Accessing error messages text in code

I'm working on some flash app. Now, to test customer side of it I can use Flash Player debugger version that will save logs and show error messages. When it's deployed on the customer side - they will have a regular Flash Player version which means I will have no access to error messages if errors will happen. So I would like to equip it with some tool that would capture all of my trace messages in code and errors text. As for trace messages that's fairly simple, I just override the function in my code so it sends a POST request with trace message to a logger server, but how can I get a hold of the error message? Is there a known approach to this or some trick that somebody can suggest?
You can install the debug version of flash as your browser's default (in Chrome, you must disable the built-in player), so if you wanted to test user experience and debug, this would be the ideal solution.
However, to answer your question: there's no method for universally catching all errors, and redirecting them (that I know of). You'd have to encapsulate problem code ahead of time with try...catch statements, and send the property back on catch. For example:
try {
this["foo"]();
} catch (e:Error) {
trace(e);
}
In the debug version, the traced value would be TypeError: Error #1006: value is not a function. And while the standard version will only output TypeError: Error #1006, (a notably less descriptive error), what we're missing is any reference to where the error occured. To get this, we need to use Error.getStackTrace() to see the call stack and the line where the error occurred. In debug, this outputs the following:
TypeError: Error #1006: value is not a function.
at Shell_fla::MainTimeline/init()[C:\Projects\shell.as:91
In the standard client, we get a dissapointing null. In short, you cannot get any valuable info from the client versions.
The best advice I can give is to write around your problem code with your own custom error reports. For example, catch IO errors and trace the file it failed to load, or if you're expecting an object.foo, first try if (object.hasOwnProperty("foo")) { // do something } else { trace("foo not found in " + object.name) }. Code defensively.
Cheers,
I've discovered this post on StackOverflow:
How to catch all exceptions in Flex?
It answers my question, strange that I haven't ran into it while I was googling prior to asking.

ASP.NET MVC: “An internal error occurred.” when loading certificate bytes with X509Certificate2

I have already spent a few hours to resolve this error. The weird thing is when I use this libraries independently, it works absolutely fine but when I integrate them with my ASP .NET MVC website, it start throwing the following exception. I have also used MachineKeySet flag based on suggestion here but still no luck. Could anyone please help me to get rid of this exception. Thanks.
An internal error occurred.
Description: An unhandled exception
occurred during the execution of the
current web request. Please review the
stack trace for more information about
the error and where it originated in
the code.
Exception Details:
System.Security.Cryptography.CryptographicException:
An internal error occurred.
Source Error:
Line 194: if
(string.IsNullOrEmpty(p12FilePassword))
Line 196: certificate = new X509Certificate2(p12FileBytes, "", X509KeyStorageFlags.MachineKeySet);
Line 197: else
I found the solution here. Looks like a known issue. I used X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable flags together and problem disappeared. Other solution is to change the identity of applicationpool to LOCALSERVICE.