title: Angular : An unhandled exception occurred: Cannot find module 'webpack/lib/ParserHelpers'
body: <p>I want to do an upgrade from Angular 7 to 8.
  I have installed @angular-devkit/build-angular@0.800.0, uninstalled et reinstalled node modules, but I always got this problem : Cannot find module 'webpack/lib/ParserHelpers'
  When I did npm fix audit I got another type of error which is : An unhandled exception occurred: Job name &quot;..getProjectMetadata&quot; does not exist. See &quot;C:\Users\Surface\AppData\Local\Temp\ng-urmmUP\angular-errors.log&quot; for further details.<a href="https://i.stack.imgur.com/dQvCA.png" rel="noreferrer"><img src="https://i.stack.imgur.com/dQvCA.png" alt="enter image description here" /></a></p>