InterfaceError: connection already closed - django

Question

I'm running a celery(4.1.0) task with django(1.11.6) using psycopg2(2.7.3), getting these errors after 5-6 hour of deploying the app on production. One of the related issue on Django issue tickets. Tried various solution of reconnecting the connection using try and except, handling InterfaceError. Any help will be appreciated. Checked and Applied some of the solutions, but nothing seems to be working, Celery Worker Database Connection Pooling
Traceback
InterfaceError: connection already closed
File "billiard/pool.py", line 358, in workloop
result = (True, prepare_result(fun(*args, **kwargs)))
File "celery/app/trace.py", line 537, in _fast_trace_task
uuid, args, kwargs, request,
File "celery/app/trace.py", line 482, in trace_task
I, _, _, _ = on_error(task_request, exc, uuid)
File "celery/app/trace.py", line 330, in on_error
task, request, eager=eager, call_errbacks=call_errbacks,
File "celery/app/trace.py", line 164, in handle_error_state
call_errbacks=call_errbacks)
File "celery/app/trace.py", line 212, in handle_failure
task.on_failure(exc, req.id, req.args, req.kwargs, einfo)
File "telemetry/tasks.py", line 29, in on_failure
save_failed_task(self, exc, task_id, args, kwargs, einfo)
File "telemetry/celery_failure.py", line 46, in save_failed_task
existing_task_first = existing_task.first()
File "django/db/models/query.py", line 564, in first
objects = list((self if self.ordered else self.order_by('pk'))[:1])
File "django/db/models/query.py", line 250, in __iter__
self._fetch_all()
File "django/db/models/query.py", line 1118, in _fetch_all
self._result_cache = list(self._iterable_class(self))
File "django/db/models/query.py", line 53, in __iter__
results = compiler.execute_sql(chunked_fetch=self.chunked_fetch)
File "django/db/models/sql/compiler.py", line 882, in execute_sql
cursor = self.connection.cursor()
File "django/db/backends/base/base.py", line 254, in cursor
return self._cursor()
File "django/db/backends/base/base.py", line 231, in _cursor
return self._prepare_cursor(self.create_cursor(name))
File "django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "django/utils/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "django/db/backends/base/base.py", line 231, in _cursor
return self._prepare_cursor(self.create_cursor(name))
File "django/db/backends/postgresql/base.py", line 220, in create_cursor
cursor = self.connection.cursor()