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当我 npm install johnny 5 时，它不会下载目录。当我尝试使用 johnny 5 piezo 示例运行我的 index.js 文件时，它只是不想运行。给我一个关于串口的错误。我尝试安装串口，没有用。还尝试重新安装 node 和 npm，但这也没有用。这是我的 index.js：

var five = require("johnny-five"),
  board = new five.Board();

board.on("ready", function() {
  // Creates a piezo object and defines the pin to be used for the signal
  var piezo = new five.Piezo(3);

  // Injects the piezo into the repl
  board.repl.inject({
    piezo: piezo
  });

  // Plays a song
  piezo.play({
    // song is composed by an array of pairs of notes and beats
    // The first argument is the note (null means "no note")
    // The second argument is the length of time (beat) of the note (or non-note)
    song: [
      ["C4", 1 / 4],
      ["D4", 1 / 4],
      ["F4", 1 / 4],
      ["D4", 1 / 4],
      ["A4", 1 / 4],
      [null, 1 / 4],
      ["A4", 1],
      ["G4", 1],
      [null, 1 / 2],
      ["C4", 1 / 4],
      ["D4", 1 / 4],
      ["F4", 1 / 4],
      ["D4", 1 / 4],
      ["G4", 1 / 4],
      [null, 1 / 4],
      ["G4", 1],
      ["F4", 1],
      [null, 1 / 2]
    ],
    tempo: 100
  });

  // Plays the same song with a string representation
  piezo.play({
    // song is composed by a string of notes
    // a default beat is set, and the default octave is used
    // any invalid note is read as "no note"
    song: "C D F D A - A A A A G G G G - - C D F D G - G G G G F F F F - -",
    beats: 1 / 4,
    tempo: 100
  });

});

这是它抛出的错误：

PS C:\Users\Krisztian\Desktop\proba> node index.js
internal/modules/cjs/loader.js:883
  throw err;
  ^

Error: Cannot find module '@serialport/bindings'
Require stack:
- C:\Users\Krisztian\node_modules\serialport\lib\index.js
- C:\Users\Krisztian\node_modules\johnny-five\lib\board.js
- C:\Users\Krisztian\node_modules\johnny-five\lib\accelerometer.js
- C:\Users\Krisztian\node_modules\johnny-five\lib\johnny-five.js
- C:\Users\Krisztian\Desktop\proba\index.js
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
    at Function.Module._load (internal/modules/cjs/loader.js:725:27)
    at Module.require (internal/modules/cjs/loader.js:952:19)
    at require (internal/modules/cjs/helpers.js:88:18)
    at Object.<anonymous> (C:\Users\Krisztian\node_modules\serialport\lib\index.js:2:17)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Module.require (internal/modules/cjs/loader.js:952:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    'C:\\Users\\Krisztian\\node_modules\\serialport\\lib\\index.js',
    'C:\\Users\\Krisztian\\node_modules\\johnny-five\\lib\\board.js',
    'C:\\Users\\Krisztian\\node_modules\\johnny-five\\lib\\accelerometer.js',
    'C:\\Users\\Krisztian\\node_modules\\johnny-five\\lib\\johnny-five.js',
    'C:\\Users\\Krisztian\\Desktop\\proba\\index.js'
  ]
}

此外，每当我尝试安装 npm 包时，我都会收到很多错误和警告。

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