NullPointer in log during first connection to database

I get a NullPointerException on the console of my tomcat at my first connection to the database with createEntityManager(). I am using:

• apache tomcat 8.0.24
• eclipselink 2.6.1-RC1 (indirectly used by JPA)
• sqlite jdbc 3.8.10.1

The log message is the following:

[EL Warning]: connection: 2015-08-21 16:01:51.569--java.lang.NullPointerException
[EL Info]: 2015-08-21 16:01:51.585--ServerSession(29156874)--EclipseLink, version: Eclipse Persistence Services - 2.6.1.v20150605-31e8258
[EL Info]: connection: 2015-08-21 16:01:52.365--Not able to detect platform for vendor name [SQLite33.8.10.1]. Defaulting to [org.eclipse.persistence.platform.database.DatabasePlatform]. The database dialect used may not match with the database you are using. Please explicitly provide a platform using property "eclipselink.target-database".
[EL Info]: connection: 2015-08-21 16:01:52.505--ServerSession(29156874)--/file:/C:/eclipse_ee/workspaces/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/jeejpa/WEB-INF/classes/_training-jpa login successful

My application seems to work fine - do I have to care about the warning about the NullPointerException? Or do I have to care about the info

Not able to detect platform for vendor name [SQLite33.8.10.1].
Defaulting to [org.eclipse.persistence.platform.database.DatabasePlatform].
The database dialect used may not match with the database you are using.
Please explicitly provide a platform using property "eclipselink.target-database".

?