error: (-215:assertion failed) !empty() in function 'cv::cascadeclassifier::detectmultiscale'
By Santos Wisozk at Apr 28 2021
By Caleb Cartwright at Jun 07 2021
\cascadedetect.cpp:1689: error: (-215:assertion failed) !empty() in function 'cv::cascadeclassifier::detectmultiscale'
By Mostafa Bazyar at Jun 15 2021