Hi, this is my setup — hope it works for you: In a service file, I have the following import and constructor: import apn from 'apn'; private apnProvider: any; constructor() { const keyPath = path.resolve(__dirname, ${process.env.APNS_KEY_PATH}); const key = fs.readFileSync(keyPath); const keyId: string = process.env.KEY_IDENTIFIER || ""; const teamId: string = process.env.TEAM_IDENTIFIER || ""; if (!keyId || !teamId) { throw new Error("Missing APNS key identifier or team identifier."); } this.apnProvider = new apn.Provider({ token: { key, keyId, teamId, }, production: true, }); } Then I call a method that triggers the APNS as follows private async sendPushNotification(devicePushToken: string, passTypeIdentifier: string): Promise { const notification = new apn.Notification(); notification.topic = passTypeIdentifier; notification.contentAvailable = true; try { const result = await this.apnProvider.send(notification, devicePushToken); console.log("APNs response:", result); if (result.failed.length > 0) { console.error('Failed to send push notification:', result.failed); await insertWebLog('error', result.failed, `sendPushNotification on push-notification.service.ts`); } else { console.log('Push notification sent successfully'); } } catch (error) { console.error('Error sending push notification:', error); throw new Error(`Error sending push notification: ${error}`); } }