JQPL은 return class로 Inner class는 불가능

public class ChannelDTO {

    @NoArgsConstructor
    @Getter
    public static class SubChannelList {
        private Integer subChannel;
        private KillTime killTime;

        @Builder
        public SubChannelList(Integer subChannel, KillTime killTime) {
            this.subChannel = subChannel;
            this.killTime = killTime;
        }
    }

    ...
}

public List<SubChannelList> findSubChannelList(Integer dungeonId, Integer mainChannel) {
    return em.createQuery(
            "select new com.jungguji.windbossgentimer.web.dto.channel.ChannelDTO.SubChannelList" +
                    "(c.subChannel, k)" +
                    " FROM Channel c left join c.killTimes k" +
                    " WHERE c.dungeon.id = :dungeonId AND c.mainChannel = :mainChannel" +
                    "", SubChannelList.class)
            .setParameter("dungeonId", dungeonId)
            .setParameter("mainChannel", mainChannel)
            .getResultList();
}

Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: Unable to locate class [com.jungguji.windbossgentimer.web.dto.channel.ChannelDTO.SubChannelList] [select new com.jungguji.windbossgentimer.web.dto.channel.ChannelDTO.SubChannelList(c.subChannel, k) FROM com.jungguji.windbossgentimer.domain.channel.Channel c left join c.killTimes k WHERE c.dungeon.id = :dungeonId AND c.mainChannel = :mainChannel]
    at org.hibernate.hql.internal.ast.QuerySyntaxException.convert(QuerySyntaxException.java:74)
    at org.hibernate.hql.internal.ast.ErrorTracker.throwQueryException(ErrorTracker.java:93)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:282)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:192)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:144)
    at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:113)
    at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:73)
    at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:162)
    at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:604)
    at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:716)
    ... 73 more

@NoArgsConstructor
@Getter
public class SubChannelListResponseDTO {
    private Integer subChannel;
    private KillTime killTime;

    @Builder
    public SubChannelListResponseDTO(Integer subChannel, KillTime killTime) {
        this.subChannel = subChannel;
        this.killTime = killTime;
    }
}