An unhandled exception occurred: Job name "..getProjectMetadata" does not exist

It seems to be a problem with @angular-devkit/build-angular.

Try updating it by running

npm i @angular-devkit/build-angular

Or downgrading it by specifying a previous version, such as

npm i @angular-devkit/[email protected]

I had just created a new project and got this error. Since I had no legacy code I needed to work with and wanted to use the latest (9.0) version of Angular, I ran this command:

ng update @angular/cli @angular/core

and it fixed everything.

I had this error after npm audit found vulnerabilities in the version of @angular-devkit/build-angular that I was using. I ran npm audit fix which updated it to 0.900.2, but when I ran ng serve it gave the error quoted in the question.

I resolved it by downgrading to version 0.803.25. This was the highest version I could find which did not cause any errors when running ng serve. The vulnerabilities found by npm audit are resolved in this version.

This is the command I ran:

npm i @angular-devkit/[email protected]