帆软报表仪表盘开通后台监测数据刷新功能错误提示

正常:14:07:21 http-nio-8117-exec-39 WARN [root] ChartGlyph error in toJS

不能实现数据刷新功能

数据集 语句

SELECT sender,arrived,flow from

(SELECT sender,arrived,

json_extract(cast(payload as char(10000)),'$.d[2].value') flow

FROM `mqtt_msg` where sender="zpry_nzbc" order by arrived desc) t limit 0,1