message: Create uri with URL object
diff: @@ -70,7 +70,7 @@ export class BotkitCMSHelper {
  private async apiRequest(uri: string, params: {[key: string]: any} = {}, method: string = 'GET'): Promise<any> {
  let req = {
  - uri: this._config.uri + uri + '?access_token=' + this._config.token,
  + uri: new URL(uri + '?access_token=' + this._config.token, this._config.uri),
  headers: {
  'content-type': 'application/json'
  },
  