Always unknown cook failed and packaged failed?

Hello everyone!
I have some question need to be solved!

I can’t package any project even I create blnak project! (See Image)
But I have installed Visual Studio 2019!
Even I try to delete Saved and Intermideate folder still packaged failed!

I don;t know how to solve it!
Plssss help!Thanks lot!

please send the log file as an attachment. if you check the log you can find where is it