
I have used angular version 9 and updated core file on my latest project/....

When add constructor on state file for API services but i have get the issue. you can see below screenshot for easy to understand

Please help me, how to resolve this problem.
https://www.ngxs.io/advanced/ivy-migration-guide
@Injectable()
export class StudentState {
// ..
}
Thanks. It's working
Most helpful comment
https://www.ngxs.io/advanced/ivy-migration-guide