Check your topic list on firebase console.
Read moreHow do I send notifications to all devices?
Push notifications for FCM
Read moreHow do I send push notifications to multiple users?
STEP BY STEP:
Read moreHow do you send notifications to specific users with FCM in Postman?
Steps to send FCM throw Postman: URL to send: https://fcm.googleapis.com/v1/projects/projectid-34543/messages:send.
Read moreHow do I send FCM notifications to multiple devices?
Set up the SDK
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