aiogrpc pip error about mavsdk-python HOT 5 CLOSED

jones@gemini mavsdk-python % python -m venv venv                                                                                                                      [0]
jones@gemini mavsdk-python % source venv/bin/activate                                                                                                                 [0]
(venv) jones@gemini mavsdk-python % pip install -r requirements.txt                                                                                                   [0]
Ignoring importlib-resources: markers 'python_version < "3.7"' don't match your environment
Collecting protobuf>=3.5.1 (from -r requirements.txt (line 1))
  Using cached https://files.pythonhosted.org/packages/95/ad/682b9dd1bc94cc7d1ecab8bee83ae8e6ae16161ff7a4131207ae96e256bb/protobuf-3.9.0-cp37-cp37m-manylinux1_x86_64.whl
Collecting aiogrpc>=1.5 (from -r requirements.txt (line 2))
  Using cached https://files.pythonhosted.org/packages/06/73/aa687dd6f103e51c50703c43936f26bc13e563ac0489e74b7a3398eaf391/aiogrpc-1.6-py3-none-any.whl
Collecting grpcio>=1.11.0 (from -r requirements.txt (line 3))
  Using cached https://files.pythonhosted.org/packages/9d/b1/b80dea9e0bbbdd07bf7ba69c6df1aeb3e88b90b85ca326c40be9e29bc37c/grpcio-1.22.0-cp37-cp37m-manylinux1_x86_64.whl
Requirement already satisfied: setuptools in ./venv/lib/python3.7/site-packages (from protobuf>=3.5.1->-r requirements.txt (line 1)) (40.8.0)
Collecting six>=1.9 (from protobuf>=3.5.1->-r requirements.txt (line 1))
  Using cached https://files.pythonhosted.org/packages/73/fb/00a976f728d0d1fecfe898238ce23f502a721c0ac0ecfedb80e0d88c64e9/six-1.12.0-py2.py3-none-any.whl
Installing collected packages: six, protobuf, grpcio, aiogrpc
Successfully installed aiogrpc-1.6 grpcio-1.22.0 protobuf-3.9.0 six-1.12.0
You are using pip version 19.0.3, however version 19.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command

sudo apt install python3-pip
sudo pip3 install aiogrpc