Google App Engine Cron Job failing with following error - python-2.7

Question

Same code deployed on development system works fine but once deployed to production fails with following error:
Traceback (most recent call last):
File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 240, in Handle
handler = _config_handle.add_wsgi_middleware(self._LoadHandler())
File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 299, in _LoadHandler
handler, path, err = LoadObject(self._handler)
File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 85, in LoadObject
obj = __import__(path[0])
ImportError: No module named urlhandlers
Following is the URL handler code:
import traceback
import datetime
from google.appengine.api import taskqueue
import re
import webapp2
from utilities.logger import logThis, AEL_LEVEL_INFO, AEL_LEVEL_CRITICAL
from constants.constants import GAET_MASTERTASK_NAME, GAEQ_FOR_MASTERTASK
import sys
class QueueAMasterTask(webapp2.RequestHandler):
def get(self):
try:
dt =datetime.datetime.now()
logThis(AEL_LEVEL_INFO, 'Master Task added to its Q at[%s]' %(dt))
task_name = GAET_MASTERTASK_NAME + str(datetime.datetime.now())
task_name = re.sub('[^a-zA-Z0-9_-]', '_', task_name)
taskqueue.add(queue_name=GAEQ_FOR_MASTERTASK,name=task_name)
logThis(AEL_LEVEL_INFO, "OK-MASTER TASK ADD")
except taskqueue.DuplicateTaskNameError:
logThis(AEL_LEVEL_CRITICAL, "EXCEPTION on QueueAMasterTask-" + traceback.format_exc())
except:
logThis(AEL_LEVEL_CRITICAL, "EXP on QueueAMasterTask-" + traceback.format_exc())
app = webapp2.WSGIApplication([('/QueueAMasterTask', QueueAMasterTask)
], debug=True)
Cron job error log