INFO:     10.0.1.8:34674 - "GET /feapder/task/get_all_tag?project_id=2 HTTP/1.1" 200 OK
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/usr/local/python3/lib/python3.6/site-packages/uvicorn/protocols/http/httptools_impl.py", line 398, in run_asgi
    result = await app(self.scope, self.receive, self.send)
  File "/usr/local/python3/lib/python3.6/site-packages/uvicorn/middleware/proxy_headers.py", line 45, in __call__
    return await self.app(scope, receive, send)
  File "/usr/local/python3/lib/python3.6/site-packages/fastapi/applications.py", line 201, in __call__
    await super().__call__(scope, receive, send)  # pragma: no cover
  File "/usr/local/python3/lib/python3.6/site-packages/starlette/applications.py", line 111, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/usr/local/python3/lib/python3.6/site-packages/starlette/middleware/errors.py", line 181, in __call__
    raise exc from None
  File "/usr/local/python3/lib/python3.6/site-packages/starlette/middleware/errors.py", line 159, in __call__
    await self.app(scope, receive, _send)
  File "/usr/local/python3/lib/python3.6/site-packages/starlette/middleware/cors.py", line 86, in __call__
    await self.simple_response(scope, receive, send, request_headers=headers)
  File "/usr/local/python3/lib/python3.6/site-packages/starlette/middleware/cors.py", line 142, in simple_response
    await self.app(scope, receive, send)
  File "/usr/local/python3/lib/python3.6/site-packages/starlette/exceptions.py", line 82, in __call__
    raise exc from None
  File "/usr/local/python3/lib/python3.6/site-packages/starlette/exceptions.py", line 71, in __call__
    await self.app(scope, receive, sender)
  File "/usr/local/python3/lib/python3.6/site-packages/starlette/routing.py", line 566, in __call__
    await route.handle(scope, receive, send)
  File "/usr/local/python3/lib/python3.6/site-packages/starlette/routing.py", line 227, in handle
    await self.app(scope, receive, send)
  File "/usr/local/python3/lib/python3.6/site-packages/starlette/routing.py", line 41, in app
    response = await func(request)
  File "/usr/local/python3/lib/python3.6/site-packages/fastapi/routing.py", line 202, in app
    dependant=dependant, values=values, is_coroutine=is_coroutine
  File "/usr/local/python3/lib/python3.6/site-packages/fastapi/routing.py", line 148, in run_endpoint_function
    return await dependant.call(**values)
  File "<frozen views.task_instance_view>", line 94, in get_task_instance
  File "task_instance.py", line 40, in core.task_instance.get_task_instance
AttributeError: 'NoneType' object has no attribute 'get'
INFO:     10.0.1.8:34678 - "POST /feapder/task_instance/get_task_instance HTTP/1.1" 500 Internal Server Error