MapStruct - No property named “XXX“ exists in source parameter(s). Did you mean “null“?

<build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.8.1</version><configuration><source>8</source><target>8</target><encoding>UTF-8</encoding><annotationProcessorPaths><path><groupId>org.mapstruct</groupId><artifactId>mapstruct-processor</artifactId><version>1.4.1.Final</version></path><path><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.12</version></path></annotationProcessorPaths></configuration></plugin></plugins></build>