es Elasticsearch exception [type=illegal_state_exception, reason=value source config is invalid; m

java代码中 操作es api遇到问题

TermsAggregationBuilder brandAgg = AggregationBuilders.terms("brand_agg");
        brandAgg.field("brandId").size(50);
        brandAgg.subAggregation(AggregationBuilders.terms("brand_name_agg")).field("brandName").size(1);
        brandAgg.subAggregation(AggregationBuilders.terms("brand_img_agg")).field("brandImg").size(1);
        sourceBuilder.aggregation(brandAgg);

 TermsAggregationBuilder brandAgg = AggregationBuilders.terms("brand_agg").field("brandId").size(50)
         .subAggregation(AggregationBuilders.terms("brand_name_agg").field("brandName").size(50))
         .subAggregation(AggregationBuilders.terms("brand_img_agg").field("brandImg").size(50));
 sourceBuilder.aggregation(brandAgg);

上面的代码和下面的有什么不一样吗 为什么使用上面的就会报错

ERROR 16832 --- [io-10011-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is ElasticsearchStatusException[Elasticsearch exception [type=search_phase_execution_exception, reason=all shards failed]]; nested: ElasticsearchException[Elasticsearch exception [type=illegal_state_exception, reason=value source config is invalid; must have either a field context or a script or marked as unwrapped]]; nested: ElasticsearchException[Elasticsearch exception [type=illegal_state_exception, reason=value source config is invalid; must have either a field context or a script or marked as unwrapped]];] with root cause

org.elasticsearch.ElasticsearchException: Elasticsearch exception [type=illegal_state_exception, reason=value source config is invalid; must have either a field context or a script or marked as unwrapped]
    at org.elasticsearch.ElasticsearchException.innerFromXContent(ElasticsearchException.java:491) ~[elasticsearch-7.4.2.jar:7.4.2]
    at org.elasticsearch.ElasticsearchException.fromXContent(ElasticsearchException.java:402) ~[elasticsearch-7.4.2.jar:7.4.2]
    at org.elasticsearch.ElasticsearchException.innerFromXContent(ElasticsearchException.java:432) ~[elasticsearch-7.4.2.jar:7.4.2]

从这两段看不出来啥，再多给点上下文看看