problem not starting

Hi guys,
My seafile was working perfectly fine for about 4 months and now suddenly I get this error. I dont know where to look to fix this problem. Can anyone help me?

/srv/seafile# start-fastcgi

Starting seahub (fastcgi) at …
Traceback (most recent call last):
File “/srv/seafile/seahub/”, line 10, in
File “/srv/seafile/seahub/thirdpart/django/core/management/”, line 364, in execute_from_command_line
File “/srv/seafile/seahub/thirdpart/django/core/management/”, line 308, in execute
File “/srv/seafile/seahub/thirdpart/django/conf/”, line 56, in getattr
File “/srv/seafile/seahub/thirdpart/django/conf/”, line 41, in _setup
self._wrapped = Settings(settings_module)
File “/srv/seafile/seahub/thirdpart/django/conf/”, line 110, in init
mod = importlib.import_module(self.SETTINGS_MODULE)
File “/usr/lib/python2.7/importlib/”, line 37, in import_module
File “/srv/seafile/seahub/seahub/”, line 4, in
from handlers import repo_created_cb, repo_deleted_cb, clean_up_repo_trash_cb,
File “/srv/seafile/seahub/seahub/”, line 4, in
import settings
File “/srv/seafile/seahub/seahub/”, line 841, in
import seahub_settings
File “/srv/conf/”, line 15, in
NameError: name ‘true’ is not defined
Error:Seahub failed to start.

That is where the problem is.

The parameter DEBUG does not seem to be defined in

It has been defined but false and true have to be written with an upper case first letter.