@Query("select site_name,month_gen from mykeyspace.dgr_item where type='Site' and name = ?0 and dgr_date in (:list)")
public List<Object> findGen(String siteName, @Param("list") List<Date> listt);

Caused by: java.lang.IllegalArgumentException: Either use @Param on all parameters except Pageable and Sort typed once, or none at all!
at org.springframework.util.Assert.isTrue(Assert.java:68)
at org.springframework.data.repository.query.Parameters.assertEitherAllParamAnnotatedOrNone(Parameters.java:294)
at org.springframework.data.repository.query.Parameters.<init>(Parameters.java:91)
at org.springframework.data.cassandra.repository.query.CassandraParameters.<init>(CassandraParameters.java:45)
at org.springframework.data.cassandra.repository.query.CassandraQueryMethod.createParameters(CassandraQueryMethod.java:131)
at org.springframework.data.cassandra.repository.query.CassandraQueryMethod.createParameters(CassandraQueryMethod.java:45)
at org.springframework.data.repository.query.QueryMethod.<init>(QueryMethod.java:75)
at org.springframework.data.cassandra.repository.query.CassandraQueryMethod.<init>(CassandraQueryMethod.java:64)
at org.springframework.data.cassandra.repository.support.CassandraRepositoryFactory$CassandraQueryLookupStrategy.resolveQuery(CassandraRepositoryFactory.java:152)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:436)
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:221)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn(RepositoryFactoryBeanSupport.java:277)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:263)
at org.springframework.data.cassandra.repository.support.CassandraRepositoryFactoryBean.afterPropertiesSet(CassandraRepositoryFactoryBean.java:76)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624)
... 41 common frames omitted