OpenCV-demo
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OpenCV Error: Assertion failed (!empty()) in detectMultiScale, file /Users/travis/build/skvark/opencv-python/opencv/modules/objdetect/src/cascadedetect.cpp, line 1698
OpenCV Error: Assertion failed (!empty()) in detectMultiScale, file /Users/travis/build/skvark/opencv-python/opencv/modules/objdetect/src/cascadedetect.cpp, line 1698
i do not know how to solve it