EPERM: operation not permitted, lstat when running ng build

Question

I\'m getting an ERROR when trying to run ng build on my angular 4 app.

EPERM: operation not permitted, lstat \'\'
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Answer 1

This has happened in my ASP.NET projects. For me this has happened for one of two reasons.

1. This can be a permission problem so you need to run Command Prompt as Admin.

   a. Press win to open the start menu. Type in cmd to search for Command Prompt.

   b. Press ctrl + shift + enter to launch Command Prompt as administrator.

2. This can happen when you build your web project in Visual Studio(or another IDE) and it is currently running.

   a. This is a simple fix click the stop debugging and then try 'ng build' again.