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_argument_exception, reason=no mapping found for field [suggestions]]]; nested: ElasticsearchException[Elasticsearch exception [type=illegal_argument_exception, reason=no mapping found for field [suggestions]]];] with root cause

这个错误是由于 Elasticsearch 搜索过程中出现了异常，导致请求处理失败。具体来说，原因是 Elasticsearch 中没有名为 "suggestions" 的映射字段，所以无法执行搜索操作。你需要检查 Elasticsearch 索引中的映射配置是否正确，确保 "suggestions" 字段已经正确定义。如果还是无法解决问题，你可以查看 Elasticsearch 的日志，找到详细的错误信息并进行排查。