"Cannot find name Map" error in ASP.NET application - c#

I have a project which I am handling the front-end with Angular and back-end with ASP.NET. While the back-end server was already working, I was making changes on Angular project and when I wanted to re-run the ASP.NET code, I got an unexpected error at the ASP.NET side even though I did not change anything on the server side. Here is the error;
Severity: Error
Code: Build
Description: Cannot find name: 'Map'
Project: WebExperience.Test
File: D:\Desktop\StyleLabs\node_modules\#types\selenium-webdriver\http.d.ts
.
What can be causing this? Any help is appreciated, thanks.

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System.Reflection.ReflectionTypeLoadException: 'Unable to load one or more of the requested types. in .Net core mvc

Error image
I have asp.net core mvc application which we are migrating from MVC5 application and when I try to run the application after pull from azure repository, i getting this error in program.cs page itself and eventhough i googled with the same topic i didnt get relavant answer .
(Im using visual studio 2022 - version 17.4.3)
could you pls give a exact solution for my problem
Thanks for ur assistance.
I need to resolve this issue and run the application
"System.Reflection.ReflectionTypeLoadException: 'Unable to load one or more of the requested types.
Could not load type 'Kendo.Mvc.UI.Fluent.DropDownListBuilderBase`2' from assembly
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C# MVC - Strange compilation error code -2146232576

I published a web app with C# MVC on IIS, but when I try to access the site, the server show this error; But I published the same web app in other Server and this run without issues. (I updated the NugetPackage)
Server Error in '/Outlet' Application.
Compilation Error
Description: An error occurred during the compilation of a resource
required to service this request. Please review the following specific
error details and modify your source code appropriately.
Compiler Error Message: The compiler failed with error code
-2146232576.
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.36392
I'm searching for this error code but don't find any solution, someone knows the possible solution for this error code?

Prism 5 Sample Project - Error ProxyAuthentication required

I have downloaded Prism 5 sample projects from this link.
https://msdn.microsoft.com/en-us/library/gg406140.aspx
Tried the below project and compiled
Quickstarts\Hello World\HelloWorld.Desktop.
I am using VS2015 Professional.
I got the below error.
Error The remote server returned an error: (407) Proxy Authentication Required. HelloWorldModule
I have tried the solutions mentioned in the below link.
Prism 5 Quickstart build gets the error "The remote server returned an error: (407) Proxy Authentication Required."
Tried the other ways like
1. changing the proxy
2. removing automatically detect settings.
No clue on what's wrong.
Anyone have any idea about this error?

Method not found on a successful build

Using VS2008 I made a build of a C# web application. The build succeeded but for some unknown reason, it did not include one of the methods that used to be there. I got the following error while trying to call a web service that trigger that method:
System.Web.Services.Protocols.SoapException: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.ApplicationException: UpdateDataObject failed with message: An error occurred (1000691):
Method "DeprovisionHandling2" could not be found in class "Assignments" --->
As soon as I generated a new build, the method was back there in the DLL and the web service worked as fine as before.
Anyone faced this strange problem? What could the reason be and how to make sure we avoid it in the future?
The build is made by TFS.
Thank you!

Upgrade to .net 4 produces breaks webservice .asmx

I was trying upgrading to .net 4 for my WebForms asp.net project.
Now I'm getting this when I try going to the .asmx webservice.
Server Error in '/' Application.
Type 'Chickenweb.WebServ.WebServ' does not inherit from 'System.Web.UI.Page'.
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.Web.HttpException: Type 'Chickenweb.WebServ.WebServ' does not inherit from 'System.Web.UI.Page'.
It was because I'm using IIS and was using incorrect Application pool. Thanks for all your answers!
It looks like IIS thinks your .asmx file is a .aspx file. You should check the mappings in IIS to see that .asmx is enabled and properly set up.

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