Fix backend issue

error=null
result=[object Object]
body=undefined

/var/www/no.tingtun.utt/backend/main.coffee:96
if (result.body.substring(0, 19) === 'An error occurred: ') {
^
TypeError: Cannot call method 'substring' of undefined
at Request.io.sockets.on.socket.on.fs.readFile.socket.emit.locale as _callback
at Request.init.self.callback (/var/www/no.tingtun.utt/backend/node_modules/request/main.js:122:22)
at Request.EventEmitter.emit (events.js:99:17)
at Request. (/var/www/no.tingtun.utt/backend/node_modules/request/main.js:661:16)
at Request.EventEmitter.emit (events.js:126:20)
at IncomingMessage.Request.start.self.req.self.httpModule.request.buffer (/var/www/no.tingtun.utt/backend/node_modules/request/main.js:623:14)
at IncomingMessage.EventEmitter.emit (events.js:126:20)
at IncomingMessage._emitEnd (http.js:366:10)
at HTTPParser.parserOnMessageComplete as onMessageComplete
at Socket.socketOnData as ondata