upload error: convert failed

[haseebnaseem]

Subject of the issue

Unable to run the code given in the documentation.

Your environment

• Operating system
  • [x] Linux
• Node.js version (node --version)
  • [x] Node.js v6.x
• ImageMagick version (identify -version)
  • [x] ImageMagick v6.9.x
• s3-uploader version
  • [x] v2.x

Steps to reproduce

Tell us how to reproduce this issue. Please provide a minimal code example to demonstrate the problem.

var client = new Upload('my_s3_bucket', {
  aws: {
    path: 'images/',
    region: 'us-east-1',
    acl: 'public-read'
  },

  cleanup: {
    versions: true,
    original: false
  },

  original: {
    awsImageAcl: 'private'
  },

  versions: [{
    maxHeight: 1040,
    maxWidth: 1040,
    format: 'jpg',
    suffix: '-large',
    quality: 80,
    awsImageExpires: 31536000,
    awsImageMaxAge: 31536000
  },{
    maxWidth: 780,
    aspect: '3:2!h',
    suffix: '-medium'
  },{
    maxWidth: 320,
    aspect: '16:9!h',
    suffix: '-small'
  },{
    maxHeight: 100,
    aspect: '1:1',
    format: 'png',
    suffix: '-thumb1'
  },{
    maxHeight: 250,
    maxWidth: 250,
    aspect: '1:1',
    suffix: '-thumb2'
  }]
});

client.upload('1.jpg', {}, function(err, versions, meta) {
  if (err) { throw err; }
  versions.forEach(function(image) {
    console.log(image.width, image.height, image.url);
  });
});

Expected behaviour

The image should be uploaded.

Actual behaviour

client.upload throws an error

{ Error: Command failed: convert 1.jpg -auto-orient -strip -write mpr:1.jpg +delete
convert: missing an image filename `+delete' @ error/convert.c/ConvertImageCommand/3212.

    at ChildProcess.exithandler (child_process.js:205:12)
    at emitTwo (events.js:106:13)
    at ChildProcess.emit (events.js:194:7)
    at maybeClose (internal/child_process.js:899:16)
    at Socket.<anonymous> (internal/child_process.js:342:11)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:191:7)
    at Pipe._handle.close [as _onclose] (net.js:511:12)
  killed: false,
  code: 1,
  signal: null,
  cmd: 'convert 1.jpg -auto-orient -strip -write mpr:1.jpg +delete' }