Hi BigT168,
This issue might be because, it is unable to load the plugin properly.
Can you please try adding the plugin with the dependency as below:
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<extensions>true</extensions>
<configuration>
<instructions>
<_plugin>org.apache.sling.bnd.models.ModelsScannerPlugin</_plugin>
</instructions>
</configuration>
<dependencies>
<dependency>
<groupId>org.apache.sling</groupId>
<artifactId>org.apache.sling.bnd.models</artifactId>
<version>1.0.0</version>
</dependency>
</dependencies>
</plugin>
Also you can refer to the Sling Models.
Thanks,
Techaspect Solutions Pvt Ltd.