当我打电话时mpl_toolkits.basemap，出现以下错误，任何人都可以帮忙吗？
ImportError: dlopen(/Users/pegah/anaconda3/lib/python3.6/site-packages/matplotlib/ft2font.cpython-36m-darwin.so, 2): Library not loaded: @rpath/libpng16.16.dylib
Referenced from: /Users/pegah/anaconda3/lib/libfreetype.6.dylib
Reason: Incompatible library version: libfreetype.6.dylib requires version 51.0.0 or later, but libpng16.16.dylib provides version 49.0.0