Application error when open admin/ page

[rafalkowalski]

2016-08-15T08:27:00.294911+00:00 app[web.1]: [2016-08-15 08:27:00 +0000] [17] [ERROR] Error handling request /socket.io/?EIO=3&transport=websocket&sid=78177a028b234f31984e345e4fac5ca3
2016-08-15T08:27:00.294929+00:00 app[web.1]: File "/app/.heroku/python/lib/python2.7/site-packages/gunicorn/workers/async.py", line 52, in handle
2016-08-15T08:27:00.294929+00:00 app[web.1]: self.handle_request(listener_name, req, client, addr)
2016-08-15T08:27:00.294932+00:00 app[web.1]: File "/app/.heroku/python/lib/python2.7/site-packages/gunicorn/http/wsgi.py", line 418, in close
2016-08-15T08:27:00.294931+00:00 app[web.1]: resp.close()
2016-08-15T08:27:00.294930+00:00 app[web.1]: File "/app/.heroku/python/lib/python2.7/site-packages/gunicorn/workers/async.py", line 112, in handle_request
2016-08-15T08:27:00.294933+00:00 app[web.1]: File "/app/.heroku/python/lib/python2.7/site-packages/gunicorn/http/wsgi.py", line 334, in send_headers
2016-08-15T08:27:00.294932+00:00 app[web.1]: self.send_headers()
2016-08-15T08:27:00.294933+00:00 app[web.1]: tosend = self.default_headers()
2016-08-15T08:27:00.294934+00:00 app[web.1]: File "/app/.heroku/python/lib/python2.7/site-packages/gunicorn/http/wsgi.py", line 315, in default_headers
2016-08-15T08:27:00.294935+00:00 app[web.1]: elif self.should_close():
2016-08-15T08:27:00.294936+00:00 app[web.1]: File "/app/.heroku/python/lib/python2.7/site-packages/gunicorn/http/wsgi.py", line 238, in should_close
2016-08-15T08:27:00.294936+00:00 app[web.1]: if self.status_code < 200 or self.status_code in (204, 304):
2016-08-15T08:27:00.294937+00:00 app[web.1]: AttributeError: 'Response' object has no attribute 'status_code'

[shivamMg]

@rafalkowalski If you mean the AttributeError in Gunicorn it shouldn't be an issue. It's because Gunicorn doesn't understand WebSocket requests. Here's more from a similar issue at Flask-SocketIO:

miguelgrinberg/Flask-SocketIO#223

It doesn't block any communication or stop the server.

[rafalkowalski]

@shivamMg Have you visited /admin page? http://open-event-dev.herokuapp.com/admin/ maybe you know why this page can't be open?

[SaptakS]

@shivamMg this is the error log:

2016-08-15T20:44:29.679383+00:00 heroku[web.1]: Process running mem=524M(102.4%)
2016-08-15T20:44:29.679531+00:00 heroku[web.1]: Error R14 (Memory quota exceeded)
2016-08-15T20:44:50.925820+00:00 heroku[web.1]: Process running mem=534M(104.3%)
2016-08-15T20:44:50.925894+00:00 heroku[web.1]: Error R14 (Memory quota exceeded)
2016-08-15T20:44:38+00:00 app[heroku-redis]: source=HEROKU_REDIS_BLUE sample#active-connections=1 sample#load-avg-1m=0.13 sample#load-avg-5m=0.08 sample#load-avg-15m=0.075 sample#read-iops=0 sample#write-iops=0 sample#memory-total=15664884.0kB sample#memory-free=12355324.0kB sample#memory-cached=435956kB sample#memory-redis=333472bytes sample#hit-rate=0.41841 sample#evicted-keys=0
2016-08-15T20:44:43+00:00 app[heroku-redis]: source=REDIS sample#active-connections=12 sample#load-avg-1m=0.06 sample#load-avg-5m=0.045 sample#load-avg-15m=0.05 sample#read-iops=0 sample#write-iops=0 sample#memory-total=15664884.0kB sample#memory-free=13732316.0kB sample#memory-cached=417796kB sample#memory-redis=535808bytes sample#hit-rate=0.34037 sample#evicted-keys=0
2016-08-15T20:45:12.084207+00:00 heroku[web.1]: Process running mem=541M(105.8%)
2016-08-15T20:45:12.084207+00:00 heroku[web.1]: Error R14 (Memory quota exceeded)
2016-08-15T20:45:17.535920+00:00 app[web.1]: Fantastico Concerto
2016-08-15T20:45:17.457146+00:00 app[web.1]: BAWHHH GAWWWD
2016-08-15T20:45:17.688250+00:00 app[web.1]: PayPal Payment Test Event
2016-08-15T20:45:17.612078+00:00 app[web.1]: sddfs
2016-08-15T20:45:17.750381+00:00 app[web.1]: PayPal and Stripe Payment Test Event
2016-08-15T20:45:17.835682+00:00 app[web.1]: Cool HK event
2016-08-15T20:45:17.910709+00:00 app[web.1]: Some Event
2016-08-15T20:45:17.989760+00:00 app[web.1]: Stripe Payment Test Event
2016-08-15T20:45:18.118415+00:00 app[web.1]: Aayush
2016-08-15T20:45:18.257221+00:00 app[web.1]: jaja
2016-08-15T20:45:32.880223+00:00 heroku[web.1]: Process running mem=548M(106.9%)
2016-08-15T20:45:32.880360+00:00 heroku[web.1]: Error R14 (Memory quota exceeded)
2016-08-15T20:45:54.183378+00:00 heroku[web.1]: Error R14 (Memory quota exceeded)
2016-08-15T20:45:54.183260+00:00 heroku[web.1]: Process running mem=548M(106.9%)
2016-08-15T20:45:57+00:00 app[heroku-redis]: source=HEROKU_REDIS_BLUE sample#active-connections=1 sample#load-avg-1m=0.06 sample#load-avg-5m=0.07 sample#load-avg-15m=0.07 sample#read-iops=0 sample#write-iops=0 sample#memory-total=15664884.0kB sample#memory-free=12355040.0kB sample#memory-cached=435956kB sample#memory-redis=333472bytes sample#hit-rate=0.41841 sample#evicted-keys=0
2016-08-15T20:46:14.889039+00:00 heroku[web.1]: Error R14 (Memory quota exceeded)
2016-08-15T20:46:14.888944+00:00 heroku[web.1]: Process running mem=548M(106.9%)
2016-08-15T20:46:03+00:00 app[heroku-redis]: source=REDIS sample#active-connections=12 sample#load-avg-1m=0.04 sample#load-avg-5m=0.045 sample#load-avg-15m=0.05 sample#read-iops=0 sample#write-iops=0 sample#memory-total=15664884.0kB sample#memory-free=13732556.0kB sample#memory-cached=417796kB sample#memory-redis=535808bytes sample#hit-rate=0.34037 sample#evicted-keys=0

[SaptakS]

I did a little searching on the error.. It's a problem of heroku kindof..... Due to some reason the memory quota to be used is exceeding.... It can be due to various reasons.. Some of the reasons I found out was too many migrations.... Too much memory used in runtime due to too many service workers....
but this error seems to arrive mainly for ruby on rails or NodeJS codes... no such issue reported for flask...
So I am a little confused what is the exact reason for this happening..
And then in a blog I found this as well:
I’ve been pulling my hair out wondering why my video processing worker dynos are getting R14 “Memory Quota” exceeded warnings, and only after I instrumented my code to take memory snapshots (ps -ef + cat /proc/meminfo at relevant timings) I got to suspecting that buffer cache is counted against me in my memory quota (why isn’t this documented? why can’t Heroku’s support resolve my ticket asking for explanations regarding my ps -ef outputs for a few weeks now?). We get false R14 positives all the time.
https://tech.blog.aknin.name/2012/03/09/heroku-is-great-however/
This is the only link I found in heroku about R14 https://devcenter.heroku.com/articles/error-codes#r14-memory-quota-exceeded

@aviaryan @niranjan94 any idea?