Does anybody know where to get the API Key mentioned in this documentation when using Firebase Cloud Messaging (FCM)?
Google Cloud Messaging (GCM) has been replaced by FCM, and I'm not sure where to find the required API key.
I managed to send push notification directly from Firebase project to my app, but when I try to
send test notification from my
Connected App inside Salesforce I get an error message, probably due to incorrect API Key.