用于连接vsftpd服务器的代码

sftp.connect({

host: "3.6.75.65"

port: "22"

username: "ashish-ftp"

password: "*******"

})
.then(() => {

console.log("result")

})
.catch((err)=>{

console.log("error")

})

我已经完成了在aws中为文件传输设置VSFTPD服务器，并尝试使用npm模块-ssh 2-sftp-client连接，它显示下面给出的错误

Error: All configured authentication methods failed

at tryNextAuth (/home/ashish/addis/node_modules/ssh2/lib/client.js:392:17)

at SSH2Stream.onUSERAUTH_FAILURE (/home/ashish/addis/node_modules/ssh2/lib/client.js:599:5)

at emitTwo (events.js:126:13)

at SSH2Stream.emit (events.js:214:7)

at parsePacket (/home/ashish/addis-pianca/node_modules/ssh2-streams/lib/ssh.js:3930:10)

at SSH2Stream._transform (/home/ashish/addis-pianca/node_modules/ssh2-streams/lib/ssh.js:671:13)

at SSH2Stream.Transform._read (_stream_transform.js:186:10)

at SSH2Stream._read (/home/ashish/addis-pianca/node_modules/ssh2-streams/lib/ssh.js:253:15)

at SSH2Stream.Transform._write (_stream_transform.js:174:12)

at doWrite (_stream_writable.js:397:12)

at writeOrBuffer (_stream_writable.js:383:5)

at SSH2Stream.Writable.write (_stream_writable.js:290:11)

at Socket.ondata (_stream_readable.js:639:20)

at emitOne (events.js:116:13)

at Socket.emit (events.js:211:7)

at addChunk (_stream_readable.js:263:12)

at readableAddChunk (_stream_readable.js:250:11)

at Socket.Readable.push (_stream_readable.js:208:10)

at TCP.onread (net.js:607:20) level: 'client-authentication'

当与filezilla连接时，显示错误

Error: FATAL ERROR: No supported authentication methods available (server sent: publickey)
Error: Could not connect to server

请帮助如何使用NPM模块连接FTP服务器。