Trying to load local json file in Angular8

I'm trying to load local json file but I keep getting an error:

import { Injectable } from "@angular/core";
import { HttpClient } from "@angular/common/http";

@Injectable({
  providedIn: "root"
})
export class SearchService {
  constructor(private http: HttpClient) {}
 getJsonFIle() {

    this.http.get("./configs/dor.json").subscribe(data => {
      console.log(data);
    });
  }
}

This is the error on the browser: