KeyError KeyError: '30MVJZJNHMDZ1XJ9YDCG45MIR5D9JT_14466_starttime'

30MVJZJNHMDZ1XJ9YDCG45MIR5D9JT

Traceback (most recent call last):
  File "/data/sls/u/dharwath/anaconda3_new/envs/speak_tool/lib/python3.7/site-packages/flask/app.py", line 2463, in __call__
    return self.wsgi_app(environ, start_response)
  File "/data/sls/u/dharwath/anaconda3_new/envs/speak_tool/lib/python3.7/site-packages/flask/app.py", line 2449, in wsgi_app
    response = self.handle_exception(e)
  File "/data/sls/u/dharwath/anaconda3_new/envs/speak_tool/lib/python3.7/site-packages/flask/app.py", line 1866, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/data/sls/u/dharwath/anaconda3_new/envs/speak_tool/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/data/sls/u/dharwath/anaconda3_new/envs/speak_tool/lib/python3.7/site-packages/flask/app.py", line 2446, in wsgi_app
    response = self.full_dispatch_request()
  File "/data/sls/u/dharwath/anaconda3_new/envs/speak_tool/lib/python3.7/site-packages/flask/app.py", line 1951, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/data/sls/u/dharwath/anaconda3_new/envs/speak_tool/lib/python3.7/site-packages/flask/app.py", line 1820, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/data/sls/u/dharwath/anaconda3_new/envs/speak_tool/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/data/sls/u/dharwath/anaconda3_new/envs/speak_tool/lib/python3.7/site-packages/flask/app.py", line 1949, in full_dispatch_request
    rv = self.dispatch_request()
  File "/data/sls/u/dharwath/anaconda3_new/envs/speak_tool/lib/python3.7/site-packages/flask/app.py", line 1935, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/data/sls/u/dharwath/code/speak_tool_instances/mscoco_read_captions/main.py", line 215, in complete
    elapsed_time = time.time() - session[ass_id + "_" + test_idx + "_starttime"]
  File "/data/sls/u/dharwath/anaconda3_new/envs/speak_tool/lib/python3.7/site-packages/werkzeug/local.py", line 378, in <lambda>
    __getitem__ = lambda x, i: x._get_current_object()[i]
  File "/data/sls/u/dharwath/anaconda3_new/envs/speak_tool/lib/python3.7/site-packages/flask/sessions.py", line 84, in __getitem__
    return super(SecureCookieSession, self).__getitem__(key)
KeyError: '30MVJZJNHMDZ1XJ9YDCG45MIR5D9JT_14466_starttime'