To work fine in debian 11 it's necesary instal libpng12-0_1.2.54-1ubuntu1.1+1~ppa0~eoan_amd64.deb pakage from http://ppa.launchpad.net/linuxuprising/libpng12/ubuntu/pool/main/libp/libpng/ Solved this work fine in debian bullseye, so it's a good point. The only problem that it's imposible to win ever. Para que funcione correctamente en debian bullseye es necesario instalar la librería libpng12-0_1.2.54-1ubuntu1.1+1~ppa0~eoan_amd64.deb la cual se puede descargar de http://ppa.launchpad.net/linuxuprising/libpng12/ubuntu/pool/main/libp/libpng/
