Recherche de doublons

Erreur lors de la création de la miniature : module.js:681 return process.dlopen(module, path._makeLong(filename)); ^ Error: libpng12.so.0: cannot open shared object file: No such file or directory at Object.Module._extensions..node (module.js:681:18) at Module.load (module.js:565:32) at tryModuleLoad (module.js:505:12) at Function.Module._load (module.js:497:3) at Module.require (module.js:596:17) at require (internal/module.js:11:18) at Object.<anonymous> (/var/www/dokitfarm/mw/dokit-1.22.0/lib/3d2png/node_modules/canvas/lib/bindings.js:3:18) at Module._compile (module.js:652:30) at Object.Module._extensions..js (module.js:663:10) at Module.load (module.js:565:32)