unhandled errors when shutdown occurs during import

Observed behavior

I encountered some errors during import.

Expected behavior

No errors.

User-facing consequences

None observed.

Errors and logs

INFO:django.server:"GET /api/tasks/?1527731919906=1527731919906 HTTP/1.1" 200 2
Traceback (most recent call last):
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 180, in finish_response
    self.write(data)
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 274, in write
    self.send_headers()
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 332, in send_headers
    self.send_preamble()
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 255, in send_preamble
    ('Date: %s\r\n' % format_date_time(time.time())).encode('iso-8859-1')
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/socketserver.py", line 775, in write
    self._sock.sendall(b)
OSError: [Errno 41] Protocol wrong type for socket
ERROR    "GET /api/tasks/?1527731919906=1527731919906 HTTP/1.1" 500 59
ERROR:django.server:"GET /api/tasks/?1527731919906=1527731919906 HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 51380)
Traceback (most recent call last):
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 180, in finish_response
    self.write(data)
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 274, in write
    self.send_headers()
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 332, in send_headers
    self.send_preamble()
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 255, in send_preamble
    ('Date: %s\r\n' % format_date_time(time.time())).encode('iso-8859-1')
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/socketserver.py", line 775, in write
    self._sock.sendall(b)
OSError: [Errno 41] Protocol wrong type for socket

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 141, in run
    self.handle_error()
  File "/Users/d/Projects/learning_equality/repos/k010x/.venv/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 88, in handle_error
    super(ServerHandler, self).handle_error()
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 368, in handle_error
    self.finish_response()
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 180, in finish_response
    self.write(data)
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 274, in write
    self.send_headers()
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/socketserver.py", line 639, in process_request_thread
    self.finish_request(request, client_address)
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/socketserver.py", line 361, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/socketserver.py", line 696, in __init__
    self.handle()
  File "/Users/d/Projects/learning_equality/repos/k010x/.venv/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 155, in handle
    handler.run(self.server.get_app())
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/handlers.py", line 144, in run
    self.close()
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/wsgiref/simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------
INFO     "GET /api/tasks/?1527731920887=1527731920887 HTTP/1.1" 200 2

Steps to reproduce

unknown

Context

• kolibri dev server, 0.10.0
• python 3.6
• macos

---

cc @aronasorman @jonboiser any ideas?

[pcenov]

@radinamatic cannot replicate in 0.15.1

[radinamatic]

Thank you, long gone, closing! 💥