Looking for an Angular 2+ programmer to fix my issue

I am trying to build an e-commerce web application using Angular 8 and have an issue when I am trying to assign retrieved information from FireBase repository to a specific type. The Product is what I am trying to be assigned to and here shows how it is declared. products:Product[]=[]; filterProducts:Product[]=[]; 1) [login to view URL]().valueChanges().subscribe(products=>this.products=this.filterProducts= products); 2) export interface Product{ title:string; price:number; category:string; imageUrl:string; key:string; } 3) The error message which I get after assigning by the following code "message": "Type '{}[]' is not assignable to type 'Product[]'.\n Type '{}' is missing the following properties from type 'Product': title, price, category, imageUrl, key",