Try adding this to pom.xml of nar folder of your project <groupId>org.apache.nifi</groupId> <artifactId>nifi-standard-nar</artifactId> <version>1.3.0</version> <type>nar</type> , Try adding <dependency> <groupId>org.apache.nifi</groupId> <artifactId>nifi-standard-nar</artifactId> <version>1.3.0</version> <type>nar</type> </dependency> to pom.xml of nar folder of NiFi project ... View more