原因：动态链接库丢失或路径找不到
解决：执行下列命令即可
wget -q -O /tmp/libpng12.deb http://mirrors.kernel.org/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1_amd64.deb \ && sudo dpkg -i /tmp/libpng12.deb && rm /tmp/libpng12.deb
ImportError: libpng12.so.0: cannot open shared object file: No such file or directory
原文：https://www.cnblogs.com/dyc99/p/12600913.html