django modelforms unable to validate fields and save data entered by users into database

[Gourab Mahapatra]

Error i get :

Traceback:

File "C:\Users\Admin\PycharmProjects\autotask\AutoTaskVenv\lib\site-packages\django\core\handlers\exception.py" in inner

  34.             response = get_response(request)

File "C:\Users\Admin\PycharmProjects\autotask\AutoTaskVenv\lib\site-packages\django\core\handlers\base.py" in _get_response

  115.                 response = self.process_exception_by_middleware(e, request)

File "C:\Users\Admin\PycharmProjects\autotask\AutoTaskVenv\lib\site-packages\django\core\handlers\base.py" in _get_response

  113.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "C:\Users\Admin\PycharmProjects\autotask\AutoTaskVenv\lib\site-packages\django\contrib\auth\decorators.py" in _wrapped_view

  21.                 return view_func(request, *args, **kwargs)

File "C:\Users\Admin\PycharmProjects\autotask\autotask\dashboard\views.py" in add_job

  41. if form.is_valid():

File "C:\Users\Admin\PycharmProjects\autotask\AutoTaskVenv\lib\site-packages\django\forms\forms.py" in is_valid

  185.         return self.is_bound and not self.errors

File "C:\Users\Admin\PycharmProjects\autotask\AutoTaskVenv\lib\site-packages\django\forms\forms.py" in errors

  180.             self.full_clean()

File "C:\Users\Admin\PycharmProjects\autotask\AutoTaskVenv\lib\site-packages\django\forms\forms.py" in full_clean

  381.         self._clean_fields()

File "C:\Users\Admin\PycharmProjects\autotask\AutoTaskVenv\lib\site-packages\django\forms\forms.py" in _clean_fields

  402.                     value = getattr(self, 'clean_%s' % name)()

File "C:\Users\Admin\PycharmProjects\autotask\autotask\dashboard\forms.py" in clean_job

  46. job_db = Job.objects.get(job_name=job)

File "C:\Users\Admin\PycharmProjects\autotask\AutoTaskVenv\lib\site-packages\django\db\models\manager.py" in manager_method

  82.                 return getattr(self.get_queryset(), name)(*args, **kwargs)

File "C:\Users\Admin\PycharmProjects\autotask\AutoTaskVenv\lib\site-packages\django\db\models\query.py" in get

  408.                 self.model._meta.object_name

Exception Type: DoesNotExist at /dashboard/add_job/

Exception Value: Job matching query does not exist.

my efforts:

when i try the same query on the command prompt, then it works, please help me on this issue

for which I wil be very grateful to you...