
Callback must be a function. Received undefined
fs.js:143
throw new ERR_INVALID_CALLBACK(cb);
^
TypeError [ERR_INVALID_CALLBACK]: Callback must be a function. Received undefined
at makeCallback (fs.js:143:11)
at Object.unlink (fs.js:1024:14)
at D:\node\littleAlbum\controller\router.js:88:16
at IncomingForm.<anonymous> (D:\node\littleAlbum\node_modules\formidable\lib\incoming_form.js:107:9)
at IncomingForm.emit (events.js:210:5)
at IncomingForm._maybeEnd (D:\node\littleAlbum\node_modules\formidable\lib\incoming_form.js:557:8)
at D:\node\littleAlbum\node_modules\formidable\lib\incoming_form.js:238:12
at WriteStream.<anonymous> (D:\node\littleAlbum\node_modules\formidable\lib\file.js:79:5)
at Object.onceWrapper (events.js:299:28)
at WriteStream.emit (events.js:210:5) {
code: 'ERR_INVALID_CALLBACK'
}
原因:
正确应该为:
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