Bug Report or Feature Request (mark with an x)
- [x ] bug report -> please search issues before submitting
- [ ] feature request
Versions.

Repro steps.
With the below package.json , I perform "npm start" -> ng serve

The log given by the failure.
Build gets to 92% and gives below error

Desired functionality.
I am using below project and facing the issue : https://github.com/microsoftgraph/angular-connect-rest-sample
Mention any other details that might be useful.
Bug Report or Feature Request (mark with an
x)Versions.
Repro steps.
With the below package.json , I perform "npm start" -> ng serve

The log given by the failure.
Build gets to 92% and gives below error

Desired functionality.
I am using below project and facing the issue : https://github.com/microsoftgraph/angular-connect-rest-sample
Mention any other details that might be useful.