Hi Emiliano,
You can't find it as it is packed within a JAR file :)
It's quite complex and time consuming to debug and understand the infrastructure code.
We consider such a data conversion problem as a severe bug of data integrity.
From the screen shot you sent yesterday it seems, that some fields converted to Integer are left empty as they double, and it probably failed to convert. You should see errors in the log.
We need to add support for double in tables, but for readonly in most use cases, it's not ciritical as JSON is not type safe.
If this is a different use case, please send the app, with a matching trail and specify the problematic screen.
Thanks,
Roi