Why error in Angular 5 as : has no exported member 'OpaqueToken'.?

Question

I have an Angular 4 application, which I am upgrading to Angular 5.

I am getting the following error.

ERROR in src/app/application/services/g

Answer 1

I had this error when I updating angular 4 to 5

I fixed this issue by change package.json file

"@agm/core": "1.0.0-beta.1" to "@agm/core": "1.0.0-beta.5"

after run npm update