Upload error with Multer Cloudinary

[dungphanxuan]

I integrate multer with cloudinary https://github.com/affanshahid/multer-storage-cloudinary. When i upload from another site, sometime throw error.
I'm not pro Nodejs. So can you suggest to fix it.

UNHANDLED_REJECTION:  { error:
   { Error: connect ETIMEDOUT 52.1.216.155:443
    at Object._errnoException (util.js:992:11)
    at _exceptionWithHostPort (util.js:1014:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1186:14)
     code: 'ETIMEDOUT',
     errno: 'ETIMEDOUT',
     syscall: 'connect',
     address: '52.1.216.155',
     port: 443 } }
UNHANDLED_EXCEPTION:  TypeError: Cannot read property 'toString' of undefined
    at process.once.err (C:\My Web Sites\DropIt-Clouddinary\app.js:330:52)
    at Object.onceWrapper (events.js:317:30)
    at emitTwo (events.js:126:13)
    at process.emit (events.js:214:7)
    at C:\My Web Sites\DropIt-Clouddinary\node_modules\q\q.js:1079:25
    at runSingle (C:\My Web Sites\DropIt-Clouddinary\node_modules\q\q.js:137:1
    at flush (C:\My Web Sites\DropIt-Clouddinary\node_modules\q\q.js:130:13)
    at _combinedTickCallback (internal/process/next_tick.js:131:7)
    at process._tickCallback (internal/process/next_tick.js:180:9)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! dropit@1.0.0 start: `node app.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the dropit@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional lging output above.

[dungphanxuan]

How can i await when upload success then response data?
https://github.com/ThalKod/DropIt/blob/master/app.js#L108