I receive the following error after my NodeBB is up and running for a few hours. It doesn't seem to be specific to a browser or IP address, either. Is it something with my site configuration that I can fix?
{"error": "Cannot read property '_csrf' of undefined"}
Node v.0.10.20
RHEL 6.5 w/ 2.6.32-431.11.2.el6.x86_64
NodeBB 0.4.2
Redis server version 2.4.10
Edit: The site does not render at that point, and the error is printed in plaintext. Could the error be related to unverified user accounts? I just setup Mandrill after I had 2 users register as the local email wasn't working.
Hmm, what page do you get this error?
@psychobunny I believe all pages. Forum and Admin so far.
@Guiri Hm... can you check the server logs (in logs/output.log) and let me know the full stack trace of the error? Not sure if it'll help...
@julian I've uploaded the logs here.
Looking at it as a novice, it appears I should remove the rss plugin. I also tried changing the Site Name in admin, thinking that it may be conflicting with the production site's csrf cookie somehow, but that didn't help.
EDIT: Happy to run more tests and upload more logs. Just point me in the right direction.
Looks like it's time for me to fix the rss plugin 
Updated the rss plugin you shouldn't get those errors when you update.
@baris Awesome! Thank you. npm install nodebb-plugin-rss && ./nodebb restart? Also, how can I help you guys dig into the _csrf error? Do you want me to setup another instance on another port on the same machine to see if it's plugin related? Would doing this conflict with the same Redis DB?
You can run another instance on another redis database just use another number during node app --setup when it asks for database name. When you get that error is redis still running? Try redis-cli and see if you can access, also this might be relevant.
@Guiri First stop is /var/log/redis 
@julian Yes. Turns out I had to echo 1 > /proc/sys/vm/overcommit_memory. The forum has been running great!
Hey @julian, I've just installed NodeBB again on a clean Droplet, following psychobunnys noob guide for reference, and when logging in I got the same error. The page stops at /?loggedin with 500 Internal Server Error, api/config/ also has the same error, removing `/?loggedin' takes me back to the homepage, and I am logged in though.
I went into NodeBBs logs and saw this node_redis: no callback to send error: ERR unknown command 'pexpire'
Went into /var/log/redis, the only error in there was about overcommit_memory needing to be set to 1.
Have I set up a duff droplet on Digital Ocean or something? I've installed NodeBB about 3 or 4 times now, but never had this issue.
What version is your redis? You can see in the ACP>database. Looks like pexpire is only supported on redis 2.6.0 and up.
@baris Seems that could be the issue then, as it states my Redis version is 2.2.12.
Have updated to version 2.8.9. Must have missed a command somewhere. 
Seems it hasn't been fixed.
I get this running ./nodebb dev
error: TypeError: Cannot read property 'maxCount' of undefined
at expandObjBy (/home/a_5mith/35hz/src/settings.js:7:14)
at /home/a_5mith/35hz/src/settings.js:83:7
at /home/a_5mith/35hz/src/meta.js:457:5
at try_callback (/home/a_5mith/35hz/node_modules/redis/index.js:573:9)
at RedisClient.return_reply (/home/a_5mith/35hz/node_modules/redis/index.js:661:13)
at ReplyParser.<anonymous> (/home/a_5mith/35hz/node_modules/redis/index.js:309:14)
at ReplyParser.EventEmitter.emit (events.js:95:17)
at ReplyParser.send_reply (/home/a_5mith/35hz/node_modules/redis/lib/parser/javascript.js:300:10)
at ReplyParser.execute (/home/a_5mith/35hz/node_modules/redis/lib/parser/javascript.js:211:22)
at RedisClient.on_data (/home/a_5mith/35hz/node_modules/redis/index.js:534:27)
TypeError: Cannot read property '_csrf' of undefined
at Object.handle (/home/a_5mith/35hz/node_modules/express/node_modules/connect/lib/middleware/csrf.js:45:28)
at next (/home/a_5mith/35hz/node_modules/express/node_modules/connect/lib/proto.js:190:15)
at Object.session [as handle] (/home/a_5mith/35hz/node_modules/express/node_modules/connect/lib/middleware/session.js:218:61)
at next (/home/a_5mith/35hz/node_modules/express/node_modules/connect/lib/proto.js:190:15)
at Object.cookieParser [as handle] (/home/a_5mith/35hz/node_modules/express/node_modules/connect/lib/middleware/cookieParser.js:60:5)
at next (/home/a_5mith/35hz/node_modules/express/node_modules/connect/lib/proto.js:190:15)
at multipart (/home/a_5mith/35hz/node_modules/express/node_modules/connect/lib/middleware/multipart.js:64:37)
at /home/a_5mith/35hz/node_modules/express/node_modules/connect/lib/middleware/bodyParser.js:57:9
at urlencoded (/home/a_5mith/35hz/node_modules/express/node_modules/connect/lib/middleware/urlencoded.js:51:37)
at /home/a_5mith/35hz/node_modules/express/node_modules/connect/lib/middleware/bodyParser.js:55:7
Oh and redis version is 2.8.4, not 2.8.9. Ubuntu version is 14.04 if this helps.
Oh and everything worked fine until I tried enabling some plugins, installed and enabled, clicked Home to restart nodebb, page didn't change, so tried loading homepage, nada, have reset all plugins, still getting the issue.
Edit: a quick git pull (1 deletion) & ./nodebb upgrade later and it seems to be ok, one of the plugins seems to be the cause. Trying to figure out which one.
Culprit seems to be plugin-emoji-extended, although I've no idea why. Enabling that plugin gives me the csrf error, disabling makes the error go away.
the first error seems to be my fault: #1517 sorry for that 
It appears within emoji-extended now because I recently updated to the new settings framework
But I have no clue what the TypeError: Cannot read property '_csrf' of undefined is about... maybe it disappears when the first one is fixed.
Just merged the above fix, let me know if your error is fixed after pulling latest
@psychobunny That's done the trick, no csrf error when enabling emoji-extended. 
