Error on first load about iot.me HOT 1 CLOSED

I can't replicate the error on my side. From what I understand the error must be happening when req.session.error is invoked in one of the routes from the 'index.js' file. Is your express-session middleware running correctly ? You can add this as a last middleware in app.js in order to check that a session was indeed created.

app.use(function(req, res, next) {
    console.log(req.session);
    next();
})

This should print something like:
{ cookie:
{ path: '/',
_expires: null,
originalMaxAge: null,
httpOnly: true } }

from iot.me.