[2022-03-01T17:14:40.861] [ERROR] errorLogger - 
*************** error log start ***************
request method: GET
request originalUrl:  /dataservice/Bdata?bid=get_rru_info&_=1646125773873
request client ip:  
request query:  {"bid":"get_rru_info","_":"1646125773873"}
response time: 303732
err name: Error
err message: Connection lost: The server closed the connection.
err stack: Error: Connection lost: The server closed the connection.
    at Protocol.end (D:\github\API\server\node_modules\mysql\lib\protocol\Protocol.js:112:13)
    at Socket.<anonymous> (D:\github\API\server\node_modules\mysql\lib\Connection.js:97:28)
    at Socket.<anonymous> (D:\github\API\server\node_modules\mysql\lib\Connection.js:502:10)
    at Socket.emit (events.js:327:22)
    at endReadableNT (_stream_readable.js:1327:12)
    at processTicksAndRejections (internal/process/task_queues.js:80:21)
    --------------------
    at Protocol._enqueue (D:\github\API\server\node_modules\mysql\lib\protocol\Protocol.js:144:48)
    at PoolConnection.query (D:\github\API\server\node_modules\mysql\lib\Connection.js:200:25)
    at D:\github\API\server\utils\mysql_db.js:87:20
    at Ping.onOperationComplete (D:\github\API\server\node_modules\mysql\lib\Pool.js:110:5)
    at Ping.<anonymous> (D:\github\API\server\node_modules\mysql\lib\Connection.js:502:10)
    at Ping._callback (D:\github\API\server\node_modules\mysql\lib\Connection.js:468:16)
    at Ping.Sequence.end (D:\github\API\server\node_modules\mysql\lib\protocol\sequences\Sequence.js:83:24)
    at Ping.Sequence.OkPacket (D:\github\API\server\node_modules\mysql\lib\protocol\sequences\Sequence.js:92:8)
    at Protocol._parsePacket (D:\github\API\server\node_modules\mysql\lib\protocol\Protocol.js:278:23)
    at Parser.write (D:\github\API\server\node_modules\mysql\lib\protocol\Parser.js:76:12)
    at Protocol.write (D:\github\API\server\node_modules\mysql\lib\protocol\Protocol.js:38:16)
    at Socket.<anonymous> (D:\github\API\server\node_modules\mysql\lib\Connection.js:91:28)
    at Socket.<anonymous> (D:\github\API\server\node_modules\mysql\lib\Connection.js:502:10)
    at Socket.emit (events.js:315:20)
    at addChunk (_stream_readable.js:309:12)
    at readableAddChunk (_stream_readable.js:284:9)
    at Socket.Readable.push (_stream_readable.js:223:10)
    at TCP.onStreamRead (internal/stream_base_commons.js:188:23)
*************** error log end ***************