Apache2 and mod_wsgi: Truncated or oversized response headers received from daemon process - apache

Question

My application is running with an Apache 2 server using mod_wsgi, Flask, and Python 2.7. Oddly enough, the application crashes when the page refreshes. For me, this happens exactly on every other refresh. You can see it here. Furthermore, in Chrome, if I open the web inspector tool, the program does not crash.
In the logs, I see:
[Tue Apr 14 13:45:29.137444 2015] [wsgi:error] [pid 32713] [client 146.203.54.32:58816] Truncated or oversized response headers received from daemon process 'localhost:80': /etc/g2e/htdocs/g2e
[Tue Apr 14 13:45:29.671493 2015] [core:notice] [pid 28845] AH00052: child pid 640 exit signal Segmentation fault (11)
[Tue Apr 14 13:45:29.671520 2015] [wsgi:info] [pid 28845] mod_wsgi (pid=640): Process 'localhost:80' has died, deregister and restart it.
[Tue Apr 14 13:45:29.671524 2015] [wsgi:info] [pid 28845] mod_wsgi (pid=640): Process 'localhost:80' terminated by signal 11
[Tue Apr 14 13:45:29.671527 2015] [wsgi:info] [pid 28845] mod_wsgi (pid=640): Process 'localhost:80' has been deregistered and will no longer be monitored.
...
FWIW, I am using
Linux 3.16.7-7-desktop #1 SMP PREEMPT Wed Dec 17 18:00:44 UTC 2014 (762f27a) x86_64 x86_64 x86_64 GNU/Linux
Any help is appreciated.

Answer 1

I may have a tweak. I had this problem but now it's working somehow.
I tried to run mod_wsgi as a daemon. My application didn't work and I had this error message in the logs.
however running mod_wsgi as non-daemon worked, for instance
python manage.py runmodwsgi --reload-on-changes # for Django
So I once again launched it then killed it.
my app is still running :)
(mod_wsgi 4.4.[1-13], apache2, python 2.7, Django 1.7, Debian8 fresh install, with or without virtualenv)