--OSError: cannot load library 'build/mcclib/libmcclib.dll': error 0x7e. Additionally, ctypes.util.find_library() did not manage to locate a library called 'build/mcclib/libmcclib.dll'

[LiuLei-beep]

Thanks to the author for his answer. I'm On Windows, and I've executed :
--set OpenCV_DIR="./extern/opencv"
--mkdir build
--cd build
--cmake -G "Visual Studio 14 2015 Win64" -D OpenCV_DIR=%OpenCV_DIR% ..
And the result of running it is:
-- Selecting Windows SDK version to target Windows 10.0.18363.
-- The C compiler identification is MSVC 19.0.23026.0
-- The CXX compiler identification is MSVC 19.0.23026.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: D:/软件安装/VC/bin/x86_amd64/cl.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: D:/软件安装/VC/bin/x86_amd64/cl.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: D:/colorchecker-detection-master/build

When I run mccfiend.py,
But The mistake happened again:
--OSError: cannot load library 'build/mcclib/libmcclib.dll': error 0x7e. Additionally, ctypes.util.find_library() did not manage to locate a library called 'build/mcclib/libmcclib.dll'

I can't solve this problem. I really hope you can help me. Thanks again!