Workspace extension with invalid name (defaultProject) found

Issue

I am facing a problem when I try to run ng serve command, but I am getting the following error message:

Workspace extension with invalid name (defaultProject) found.

I tried npm install --legacy-peer-deps but I couldn't solve the issue.

The angular.json file can be found at:

https://pastebin.com/h7r6r8Ay

I searched about a solution here on stackoverflow but no success. Any thoughts?

Solution

I solved this issue by removing the following line :

"defaultProject": "abc"

from my angular.json file.

defaultProject has been deprecated.
See https://github.com/angular/angular-cli/issues/11111

Answered By - fergal_dd