Firebase – FCM send – 401 Unauthorized even though can query Firestore documents
Im trying to send FCM in my kotlin springboot backend. I can query/write firestore documents successfully. But when I try to send fcm, I got below error. message: "handleException /<endpoint> com.google.api.client.http.HttpResponseException: 401 Unauthorized POST https://fcm.googleapis.com/v1/projects/<project-id>/messages:send" The Service Account have Firebase…