libpng12.so. 0: cannot open shared object file: no such file or directory

stay conda Call in environment opencv Report errors ：ImportError: libpng12.so.0: cannot open shared object file: No such file or directory
reason ： The dynamic link library is missing or the path cannot be found
solve ： Just execute the following command

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
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