Could someone help me with this code. I keep getting the following error - @In attribute requires non-null value: userSearchDao.fem

@Name( "userDao" )
@Scope( ScopeType.STATELESS )
@AutoCreate
public class UserDAO {
        
        private final EntityManager em;
        @In FullTextEntityManager fem;
        
        public UserDAO() {
                em = ( EntityManager )Component.getInstance( "entityManager", true );
        }
        
        @SuppressWarnings( "unchecked" )
        public List<User> searchUsers( final String text ) {
                final Query query;
                
                try {
                        FullTextEntityManager fem = Search.getFullTextEntityManager( em );
            query = fem.createFullTextQuery( getLuceneQuery( text ), User.class );
            return query.getResultList();
        } catch ( ParseException ex ) {
            log.error( "search error", ex );
            return null;
        }
        }
        
        private org.apache.lucene.search.Query getLuceneQuery( final String queryString ) throws ParseException {
                try {
                    Map<String, Float> boostPerField = new HashMap<String, Float>( 2 );
                    boostPerField.put( "subject", (float) 4 );
                    boostPerField.put( "description", (float) 1 );
                    String[] searchFields = { "subject", "description" };
                    QueryParser parser = new MultiFieldQueryParser( Version.LUCENE_31, searchFields, new StandardAnalyzer( Version.LUCENE_31 ), boostPerField );
                    parser.setDefaultOperator( QueryParser.Operator.OR );
                    org.apache.lucene.search.Query luceneQuery = null;
                    luceneQuery = parser.parse( queryString );
                    return luceneQuery;
                } catch ( ParseException ex ) {
                return null;
            }
   }    
}