Getting an error - Cannot find module 'express-session'

[dsm-kbl]

I am following the book and I get this error when I try to start my server. I tried to install the module express-session but doesn't work. It says

throw err;
Cannot find module 'express-session'

on this line - app.use(require('express-session')({ store : sessionStore }));

How can i solve this problem?

[EthanRBrown]

I just tried it and it worked fine for me. I have noticed two facts about npm that may help you. Sometimes there are temporary interruptions in the npm service, and sometimes just running npm install a second time will do the trick. Secondly, even though it shouldn't be necessary, I've had npm fail on me if I didn't run it with root privileges, so you might try sudo npm install as well. Let me know if either of these suggestions help....

[dsm-kbl]

Hi Ethan,
I just run npm install again and somehow it installed express-session. I got some warnings and now somehow i get a new error in this line.

app.use(vhost('api.*', rest.restler(apiOptions)));
TypeError: Object # has no method 'restler'

Any ideas?

[EthanRBrown]

I'm sorry its taken me so long to respond.... It looks like this is an obsolete use of the rest package...did you find that in the book or the repository?