After the successful installation of pyferret as per the documentation, an Import error occurs when trying to launch
ImportError: /usr/lib/x86_64-linux-gnu/libpng15.so.15: version `PNG15_0' not found (required by /usr/local/pyferret/pyferret-7.2.1-RHEL7-64/lib/python2.7/site-packages/pyferret/libpyferret.so)
After the successful installation of pyferret as per the documentation, an Import error occurs when trying to launch
ImportError: /usr/lib/x86_64-linux-gnu/libpng15.so.15: version `PNG15_0' not found (required by /usr/local/pyferret/pyferret-7.2.1-RHEL7-64/lib/python2.7/site-packages/pyferret/libpyferret.so)