WARN: No notificator configured for type : firebase

Hi,
I recently try my own firebase PUSH notification, then back to traccar one.
But i still have firebase warnin on the logs, even after setup traccar PUSH notif back on the traccar.xml

2020-11-23 06:10:06  WARN: No notificator configured for type : firebase
2020-11-23 06:10:06  WARN: You are using null notificatior, please check your configuration, notification not sent

here my traccar.xml file

<properties>
    <entry key='config.default'>./conf/default.xml</entry>

    <entry key='web.url'>traccar.xxxxx.xx</entry>

    <entry key='geocoder.enable'>true</entry>
    <entry key='geocoder.reuseDistance'>10</entry>
    <entry key='geocoder.type'>nominatim</entry>
    <entry key='geocoder.url'>https://nominatim.openstreetmap.org/reverse</entry>

    <entry key='database.driver'>org.h2.Driver</entry>
    <entry key='database.url'>jdbc:h2:./data/database</entry>
    <entry key='database.user'>sa</entry>
    <entry key='database.password'></entry>

    <entry key='notificator.types'>web,mail,traccar</entry>
    <entry key='notificator.traccar.key'>ey...NA$
    <entry key='mail.smtp.port'>587</entry>
    <entry key='mail.smtp.starttls.enable'>true</entry>
    <entry key='mail.smtp.host'>smtp.gmail.com</entry>
    <entry key='mail.smtp.from'>...@gmail.com</entry>
    <entry key='mail.smtp.auth'>true</entry>
    <entry key='mail.smtp.username'>...@gmail.com</entry>
    <entry key='mail.smtp.password'>t...j</entry>
</properties>

What did i missed ?
Any those file i need to check to remove this firebase warning ?
Thanks

PS: i running 4.11(traccar-linux-64-4.11.zip), great job by the way nice new front-end, look promising.

[SOLVED]
A notification were still using "firebase" channel.
I removed it , and replaced it by "traccar" one.
Now it's ok .
Thanks