Property 'forRoot' does not exist on type 'typeof NgbModule'.ts(2339)

{
    "resource": "/c:/Users/Karthick_Aadhi/example/src/app/app.module.ts",
    "owner": "typescript",
    "code": "2339",
    "severity": 8,
    "message": "Property 'forRoot' does not exist on type 'typeof NgbModule'.",
    "source": "ts",
    "startLineNumber": 15,
    "startColumn": 15,
    "endLineNumber": 15,
    "endColumn": 22
}