Obtain API KEY for FCM (Firebase Cloud Messaging)

1. go to : https://console.firebase.google.com/ and login to your google account.

2. If you don’t have firebase project please click CREATE NEW PROJECT

Fill project name and create. Then you will direct to firebase panel,

4. At the left top please select Project Settings

5. Select tab CLOUD MESSAGING and you will see Server Key

Server Key = FCM API KEY