Unexpected end of input

[jzarca01]

Hi lramsey, First of all thanks for your hard work

Every time i try to launch product-demo using node index.js i get an error

begin analysis
undefined:1



SyntaxError: Unexpected end of input
    at Object.parse (native)
    at _buildRecVariables (/home/pi/product/product-recommender/node_modules/product-recommender/node/engine.js:31:22)
    at Socket.<anonymous> (/home/pi/product/product-recommender/node_modules/product-recommender/node/engine.js:24:5)
    at emitOne (events.js:95:20)
    at Socket.emit (events.js:182:7)
    at Pipe._onclose (net.js:475:12)