Error on Scraper

gistfile1.txt

root@angelawang:/var/www/node/scraper# node main.js

/var/www/node/scraper/main.js:16
    	if(err) throw err;
		              ^
Error: Invalid URI "undefined"
    at Request.init (/var/www/node/scraper/node_modules/request/index.js:205:24)
    at new Request (/var/www/node/scraper/node_modules/request/index.js:124:8)
    at Function.request [as get] (/var/www/node/scraper/node_modules/request/index.js:1275:11)
    at Server.<anonymous> (/var/www/node/scraper/main.js:12:10)
    at Server.EventEmitter.emit (events.js:98:17)
    at HTTPParser.parser.onIncoming (http.js:2056:12)
    at HTTPParser.parserOnHeadersComplete [as onHeadersComplete] (http.js:120:23)
    at Socket.socket.ondata (http.js:1946:22)
    at TCP.onread (net.js:525:27)

//Link to script: https://github.com/angelazou/scraper/blob/master/main.js