Populate mat-select option from JSON file - json

Question

I tried to populate mat-select options from JSON file, but appears a error like
SyntaxError: Unexpected token n in JSON at position 8584 at JSON.parse () at XMLHttpRequest.onLoad
I created a service to get list:
getCountries(): Observable<ICountry[]>{
return this.http.get<ICountry[]>(this._url);
}
Here I tried to populate the array:
this._countriesService.getCountries()
.subscribe(data => this.countries = data,
error => console.log(error));
and the html code looks like:
<mat-form-field>
<mat-label>Country From</mat-label>
<mat-select>
<mat-option>None</mat-option>
<mat-option *ngFor="let country of countries" [value]="country.name">{{country.name}}</mat-option>
</mat-select>
</mat-form-field>
JSON file:
[
{"name": "Afghanistan", "code": "AF"},
{"name": "Åland Islands", "code": "AX"},
{"name": "Albania", "code": "AL"},
{"name": "Algeria", "code": "DZ"},
{"name": "American Samoa", "code": "AS"},
{"name": "AndorrA", "code": "AD"},
{"name": "Angola", "code": "AO"},
{"name": "Anguilla", "code": "AI"},
{"name": "Antarctica", "code": "AQ"},
{"name": "Antigua and Barbuda", "code": "AG"},
{"name": "Argentina", "code": "AR"},
{"name": "Armenia", "code": "AM"},
{"name": "Aruba", "code": "AW"},
{"name": "Australia", "code": "AU"},
{"name": "Austria", "code": "AT"},
{"name": "Azerbaijan", "code": "AZ"}
]
And I need to show all names to mat-select.
Thank you.