erro is not defined

toda vez que rodo o meu servidor ele sobe essa mensagem:

throw err; // Rethrow non-MySQL errors
      ^

ReferenceError: erro is not defined
    at Handshake.<anonymous> (C:\Users\ADMIN\ProjetosNode\index.js:6:5)
    at Handshake.<anonymous> (C:\Users\ADMIN\ProjetosNode\node_modules\mysql\lib\Connection.js:526:10)
    at Handshake._callback (C:\Users\ADMIN\ProjetosNode\node_modules\mysql\lib\Connection.js:488:16)
    at Handshake.Sequence.end (C:\Users\ADMIN\ProjetosNode\node_modules\mysql\lib\protocol\sequences\Sequence.js:83:24)
    at Handshake.Sequence.OkPacket (C:\Users\ADMIN\ProjetosNode\node_modules\mysql\lib\protocol\sequences\Sequence.js:92:8)
    at Protocol._parsePacket (C:\Users\ADMIN\ProjetosNode\node_modules\mysql\lib\protocol\Protocol.js:291:23)
    at Parser._parsePacket (C:\Users\ADMIN\ProjetosNode\node_modules\mysql\lib\protocol\Parser.js:433:10)
    at Parser.write (C:\Users\ADMIN\ProjetosNode\node_modules\mysql\lib\protocol\Parser.js:43:10)
    at Protocol.write (C:\Users\ADMIN\ProjetosNode\node_modules\mysql\lib\protocol\Protocol.js:38:16)
    at Socket.<anonymous> (C:\Users\ADMIN\ProjetosNode\node_modules\mysql\lib\Connection.js:88:28)
[nodemon] app crashed - waiting for file changes before starting...