[2022-01-10T18:12:42.781] [ERROR] errorLogger - 
*************** error log start ***************
request method: GET
request originalUrl:  /dataservice/Bdata?bid=get_roomfloor
request client ip:  ::1
request query:  {"bid":"get_roomfloor"}
response time: 2230
err name: Error
err message: connect ECONNREFUSED 112.74.77.127:3806
err stack: Error: connect ECONNREFUSED 112.74.77.127:3806
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1146:16)
    --------------------
    at Protocol._enqueue (D:\github\API\server\node_modules\mysql\lib\protocol\Protocol.js:144:48)
    at Protocol.handshake (D:\github\API\server\node_modules\mysql\lib\protocol\Protocol.js:51:23)
    at PoolConnection.connect (D:\github\API\server\node_modules\mysql\lib\Connection.js:118:18)
    at Pool.getConnection (D:\github\API\server\node_modules\mysql\lib\Pool.js:48:16)
    at D:\github\API\server\utils\mysql_db.js:11:10
    at new Promise (<anonymous>)
    at Object.query (D:\github\API\server\utils\mysql_db.js:10:10)
    at Object.bdata (D:\github\API\server\models\dataapi.js:61:26)
    at D:\github\API\server\routes\dataapi.js:16:25
    at dispatch (D:\github\API\server\node_modules\koa-router\node_modules\koa-compose\index.js:44:32)
    at next (D:\github\API\server\node_modules\koa-router\node_modules\koa-compose\index.js:45:18)
    at D:\github\API\server\node_modules\koa-router\lib\router.js:346:16
    at dispatch (D:\github\API\server\node_modules\koa-router\node_modules\koa-compose\index.js:44:32)
    at D:\github\API\server\node_modules\koa-router\node_modules\koa-compose\index.js:36:12
    at dispatch (D:\github\API\server\node_modules\koa-router\lib\router.js:351:31)
    at dispatch (D:\github\API\server\node_modules\koa-compose\index.js:42:32)
    at dispatch (D:\github\API\server\node_modules\koa-router\lib\router.js:332:32)
    at dispatch (D:\github\API\server\node_modules\koa-compose\index.js:42:32)
    at dispatch (D:\github\API\server\node_modules\koa-router\lib\router.js:332:32)
    at dispatch (D:\github\API\server\node_modules\koa-compose\index.js:42:32)
    at dispatch (D:\github\API\server\node_modules\koa-router\lib\router.js:332:32)
    at dispatch (D:\github\API\server\node_modules\koa-compose\index.js:42:32)
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