kibanna打开监控报illegal_argument_exception

kibana版本7.4
在打开Stack Monitoring菜单时报：[illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [event.dataset] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead.: Check the Elasticsearch Monitoring cluster network connection or the load level of the nodes.
哪位大神能帮我解决一下。