libImath-2_3.24.dylib not loaded

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Hi, I am a beginner in opencv. I installed opencv 4.1.0_2 on Xcode for c++, but it encountered a problem, which shows: dyld: Library not loaded: /usr/local/opt/ilmbase/lib/libImath-2_3.24.dylib Referenced from: /usr/local/Cellar/opencv/4.1.0_2/lib/libopencv_imgcodecs.4.1.dylib Reason: image not found

May I know how to solve this? Thanks.

Best Regards, Jack Chaw