I got this error when trying to install python-poppler-qt5 on windows 8.1 "Failed to determine Qt version ([WinError 2] The system cannot find the file specified)"
I have googled the whole day but still couldn't find the solution to that. What's the problem?
Run the following command in cmd:
pip install python-qt5
Your problem should be solved now.
来源：https://stackoverflow.com/questions/50311856/cannot-install-python-poppler-qt5-on-windows-8-1