Traceback (most recent call last): File "/root/.local/share/virtualenvs/uzbek-PbxfSWT6/local/lib/python2.7/site-packages/tornado/web.py", line 1332, in _execute result = method(*self.path_args, **self.path_kwargs) File "/root/.local/share/virtualenvs/uzbek-PbxfSWT6/local/lib/python2.7/site-packages/tornado/gen.py", line 112, in wrapper future.add_done_callback(final_callback) File "/root/.local/share/virtualenvs/uzbek-PbxfSWT6/local/lib/python2.7/site-packages/tornado/concurrent.py", line 134, in add_done_callback fn(self) File "/root/.local/share/virtualenvs/uzbek-PbxfSWT6/local/lib/python2.7/site-packages/tornado/gen.py", line 108, in final_callback if future.result() is not None: File "/root/.local/share/virtualenvs/uzbek-PbxfSWT6/local/lib/python2.7/site-packages/tornado/concurrent.py", line 109, in result raise_exc_info(self._exc_info) File "/root/.local/share/virtualenvs/uzbek-PbxfSWT6/local/lib/python2.7/site-packages/tornado/gen.py", line 631, in run yielded = self.gen.throw(*sys.exc_info()) File "/home/uzbek/engine/loo/handlers.py", line 196, in get response_context = yield gen.Task(wrap(self.do_get), context = context) File "/root/.local/share/virtualenvs/uzbek-PbxfSWT6/local/lib/python2.7/site-packages/tornado/gen.py", line 628, in run value = future.result() File "/root/.local/share/virtualenvs/uzbek-PbxfSWT6/local/lib/python2.7/site-packages/tornado/concurrent.py", line 109, in result raise_exc_info(self._exc_info) File "/root/.local/share/virtualenvs/uzbek-PbxfSWT6/local/lib/python2.7/site-packages/tornado/gen.py", line 354, in Task func(*args, callback=_argument_adapter(set_result), **kwargs) File "/home/uzbek/engine/loo/handlers.py", line 22, in wrap_inner return callback(fn(*args, **kwargs)) File "/home/uzbek/engine/app/core/handlers.py", line 262, in do_get pdf = PdfItem.objects.all().sort([('level', -1),('created_at', -1)]).limit(1)[0] File "/home/uzbek/engine/loo/models.py", line 98, in __getitem__ return self.model.init(super(Rowset, self).__getitem__(index)) IndexError: list index out of range