Sending Push using Firebase from Appery.io has an error "Permission Denied"

Hello, I have an appery.io project where I am trying to use firebase instead of GCM.
I created the firebase project, got the json files and imported them into appery push settings.
The devices are being registered correctly but whenever I try to send a push notification from appery, I always get the same error "SENDER_ID_MISMATCH".

Attached is the error description.
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