I turned ON Ivy compiler in my project which started in Angular 7 at the beginning and it is now running on Angular 9 and Ivy. So when running npm run build I got this errors:
Type 'FormGroup' is not assignable to type 'FormControlLike'.
The case:
<mat-step [stepControl]="firstFormGroup">
In TypeScript firstFormGroup is defined like this
firstFormGroup: FormGroup;
Anyone have any idea how to fix this? Thank you!