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並前往https://github.com/ageitgey/face_recognition/issues/933

215:Assertion failed) !_src.empty() in function 'cv::cvtColor ...

gray = cv2.cvtColor(im,cv2.COLOR_BGR2GRAY) cv2.error: OpenCV(4.1.0) C:\projects\opencv-python\opencv\modules\imgproc\src\color.cpp:182: error: ...

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