Hello, I used the precompiled binaries of the mattermost push notification server.
I followed all steps to setup the configs and runs the command
curl http://127.0.0.1:8066/api/v1/send_push -X POST -H “Content-Type: application/json” -d ‘{“type”: “message”, “message”: “test”, “badge”: 1, “platform”: “android_rn-v2”, “server_id”: “”, “device_id”: “”, “channel_id”: “”}’
But I got that message in that logs:
error [2025-10-27 09:36:16.943 +01:00] Failed to send FCM push caller=“server/android_notification_server.go:187” sid= did=“” error=“SenderId mismatch” type=android_rn errorCode=PERMISSION_DENIED
I searched the forum and also mattermost issues in github but I cannot find anything to solve that error 
Hope anyone can help me
Sven