Collecting flask>=1.0.2 (from -r requirements-cpu.txt (line 10))
Using cached https://files.pythonhosted.org/p ... y2.py3-none-any.whl
Collecting dill==0.2.8.2 (from -r requirements-cpu.txt (line 11))
Using cached https://files.pythonhosted.org/p ... dill-0.2.8.2.tar.gz
Collecting opencv-python>=3.4.3.18 (from -r requirements-cpu.txt (line 12))
Could not find a version that satisfies the requirement opencv-python>=3.4.3.18 (from -r requirements-cpu.txt (line 12)) (from versions: )
No matching distribution found for opencv-python>=3.4.3.18 (from -r requirements-cpu.txt (line 12))