B4J Question Class Not Found: b4j.example.main$_... Trying.... with MQTT

Hello,

I have 2 apps that communicate together. They send objects (types) to each others via MQTT.
Their package name is different. Each time the application starts and they send types to each others, I get this message in my log:

Class not found: com.website.slave.main$_message, trying: com.website.master.main$_message

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I read here
https://www.b4x.com/android/forum/threads/server-send-and-receive-objects.37206/#content

Erel said:

Note that you will see the following message in the logs:
You can ignore it. It happens on the first time that a type with a different package is discovered.

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But I keep on receiving those class not found in my log.

Should I not worry about those messages? Or should I set the package name to the same name for both apps?

Thank you