python - 500 Server Error in OSQA -

i host osqa in aws ec2 , encounter 500 server error while accessing homepage.

500 server error

sorry, system error

system error log recorded, error fixed possible

the error log file /var/log/apache2/osqa.error.log empty. accessing login page mysite.com/account/signin/ normal.

part of settings_local.py is:

#admins , managers admins = () managers = admins  debug = false debug_toolbar_config = {     'intercept_redirects': true } template_debug = debug internal_ips = ('127.0.0.1',) allowed_hosts = ('example.com',) 

is problem permission?

-rw-rw-r-- 1 ubuntu www-pub    0 may 25 18:21 __init__.py -rw-rw-r-- 1 ubuntu www-pub  242 may 25 18:21 manage.py -rw-rw-r-- 1 ubuntu www-pub 4556 may 25 18:21 settings.py -rw-rw-r-- 1 ubuntu www-pub 2257 jun 25 08:01 settings_local.py -rw-rw-r-- 1 ubuntu www-pub  429 may 25 18:21 urls.py 

the problem results higher markdown version (found existing installation: markdown 2.6.2), reported here.

install lower version solve it:

sudo pip install markdown==2.4.1