Delete bin and obj and restarted PC.

Or refer below link.

https://docs.microsoft.com/en-us/visualstudio/msbuild/errors/msb4181?view=vs-2022

i still can't resolve it

please help me

Share your code.

I replaced it with an old project and the error is gone

and for the code it has at least more than thousand line so its so diificult to identify where is the error spacially the debugger of visual studio return an error not for particle line in the code

so for now i am good to go and thanks for your help thanks a lot

You can make use of Try Catch for getting the complete error details.

Refer below article.

Display Exception (Error) Message details using JavaScript Alert MessageBox in ASP.Net