Error integrating firebase with traccar 5.5 com.google.api.client.json.jackson2.

Hi, I've been trying to integrate traccar 5.5 with firebase for days, I think I've done all the steps correctly and I still get this error.

com.google.api.client.json.jackson2.JacksonFactory - ClassNotFoundException (... < NotificatorFirebase:61 < <gener:-1 < *:-1 < ... < NotificatorManager:73 < ...)

That could be happening ?

Are you using the official release?

Thanks Anton, how can I check it?

Well, did you download an installer from this website?

Traccar source code,
from https://www.traccar.org/source-code/

So you're using the source code? Latest master? That would explain the issue.

I am using the master version on an Ubuntu 22 server

You probably shouldn't use master branch if you're asking this question. Use the stable release instead.

sorry Anton I am not very expert in the matter, I just followed the steps of
https://www.traccar.org/build/

git clone --recursive https://github.com/traccar/traccar.git

OK, so you don't have any knowledge of Java or git? What are you trying to do?

I have worked few things with Java and Git.
Alright then, reviewing...
1- I install the stable version.
2- I configure my firebase account.
3- I do the test again.

i have the same problem with 5.6 Version
i the 5.5 Version i have FirebaseMessagingException (... < NotificatorFirebase:94 < NotificationResource:96 < ...)
and I thought with 5.6 it would be solved

What is the error exactly?

in 5.6 i have the

com.google.api.client.json.jackson2.JacksonFactory - ClassNotFoundException (... < NotificatorFirebase:61 < <gener:-1 < *:-1 < ... < NotificatorManager:73 < ...)

in 5.5 i have

SenderId mismatch - FirebaseMessagingException (... < NotificatorFirebase:94 < NotificationResource:96 < ...)

OK, so it's NOT the same problem. The error is completely different. The 5.6 error seems to indicate that you didn't install the official version.