push notifications arrive empty.

hi. I have configured so that it sends me push notifications of type firebase and type web. the engine message arrives on the platform: "engine off", but in the push notification only the icon arrives and the rest arrives empty (null)
Message arrived
Message data: {}
Another question is to configure the templates and indicate which one will be used for the messages, or this is configured by defaults

Have you changed any code or templates? Are you using the latest official release?

hi.
traccar-linux-64-4.14.zip , standard
No changes or code modification,
thank you for your prompt response

Where do you this part?

Message arrived
Message data: {}