TypeError: la tâche n'est pas une fonction dans async js parallèle

Je suis en train de télécharger une image et la mettre à jour l'url de l'image dans la base de données de collection à l'aide du code ci-dessous.

Controller.prototype.handle = function (req, res, next) {
var id = req.params.id,
controller = req.params.controller,
optionalController;
optionalController = _.clone(controller);
//handle optional controller
if (controller === 'newboat') {
controller = 'boat';
} else if (controller === 'newcrew') {
controller = 'crew';
}
var files = req.files.files || {},
monthYear = new Date(),          
monthYear = [monthYear.getFullYear(), monthYear.getMonth()],      
filename = files[0].originalFilename,
path = files[0].path,
extension = filename.match(EXPRESSION_EXTENSION)[1],
destFolder = [ROOT, monthYear[0], '/', monthYear[1] ].join(''),
destination = [ROOT, monthYear[0], '/', monthYear[1] ,'/', id, '.', extension ].join('');      
//log info  
//console.log(id, controller, filename, extension, destination, path);
var opts = JSON.stringify({id: id, photo: ['/uploads/',monthYear[0], '/', monthYear[1] ,'/', id, '.', extension ].join('') });
async.series([
uploadImage(path,destFolder,destination), 
ProcessUpload(optionalController, opts, res) 
]);
};
//write file
var uploadImage = function(path,destFolder, destination) {
//The land of callbacks ------>>>>>> inception within inception
mkdirp(destFolder,777,function (err) {      
fs.readFile(path, function (err, data) {
fs.writeFile(destination, data, function (err) {
if (err) {
console.log('image not uploaded..');
return false;
}else {
return true;
}
});
});
}); 
};
var ProcessUpload = function(optionalController, opts, res ) {
opts = JSON.parse(opts);
if (optionalController === 'boat') {    
updateBoatDatabase(opts);    
}
};
/**
* Update boat photo to database
*/
var updateBoatDatabase = function (opts, callback) {
//save to database
return dbServices.dbBoat.updatePhoto(opts, callback);
};

Ici, c'est le Service de Base de données qui est appelé

  /**
* Update image
*/
updatePhoto: function (opts, callback) {
var id = opts.id;
//find boat by id
this.modelClass.findById(id, function (err, model) {
if (err || !model)
return callback(err);      
//set update value
model.photo = opts.photo;
//save
model.save(callback);
});
},

J'obtiens l'erreur suivante dans le téléchargement de l'image, mais l'image est téléchargé sur le serveur et son adresse url de mise à jour sur la base de données de la collection ainsi. Je suppose qu'il a à faire avec mes rappels mais je ne suis pas vraiment sûr où je vais mal. Des conseils sur la façon de déboguer ce serait apprécié.

   TypeError: task is not a function
at /home/work/bluewatertracks/node_modules/async/lib/async.js:689:13
at iterate (/home/work/bluewatertracks/node_modules/async/lib/async.js:265:13)
at async.forEachOfSeries.async.eachOfSeries (/home/work/bluewatertracks/node_modules/async/lib/async.js:284:9)
at _parallel (/home/work/bluewatertracks/node_modules/async/lib/async.js:688:9)
at Object.async.series (/home/work/bluewatertracks/node_modules/async/lib/async.js:710:9)
at Controller.handle (/home/work/bluewatertracks/server/routers/photoUploader.js:56:9)
at Layer.handle [as handle_request] (/home/work/bluewatertracks/node_modules/express/lib/router/layer.js:82:5)
at next (/home/work/bluewatertracks/node_modules/express/lib/router/route.js:110:13)
at Form.<anonymous> (/home/work/bluewatertracks/node_modules/connect-multiparty/index.js:101:9)
at emitNone (events.js:72:20)
at Form.emit (events.js:166:7)
at maybeClose (/home/work/bluewatertracks/node_modules/connect-multiparty/node_modules/multiparty/index.js:557:10)
at endFlush (/home/work/bluewatertracks/node_modules/connect-multiparty/node_modules/multiparty/index.js:552:3)
at WriteStream.<anonymous> (/home/work/bluewatertracks/node_modules/connect-multiparty/node_modules/multiparty/index.js:617:5)
at emitNone (events.js:72:20)
at WriteStream.emit (events.js:166:7)
InformationsquelleAutor Bazinga777 | 2015-10-13