version 14 has been deprecated.

[web-planex]

the current version is v15.0

{
"message": "(#2635) You are calling a deprecated version of the Ads API. Please update to the latest version: v15.0."
}

[LashaTsatsashvili]

you can try this temporary solution

const bizSdk = require('facebook-nodejs-business-sdk');
Object.defineProperty(bizSdk.FacebookAdsApi, 'VERSION', { get: () => 'v15.0' });
Object.defineProperty(bizSdk.FacebookAdsApi, 'SDK_VERSION', { get: () => 'v15.0.0' });