Is this node working? I cannot send notifications and I get no error messages. I have tried both Server Key and Sender ID as FCM_SERVER_KEY environment variable. I use "to": "FCM registration token", which works when I send notifications from Firebase. I inject a msg.payload as JSON:
"to": "FCM registration token",
"title": "My title",
"body": "My body"
I am gratefful if anyone using this node successfully will give me some advice.