I cannot open pictures with type PNG, and if i open a picture, it shows me this message (Fatal error reading PNG image file: Not a PNG file) How can i solve this problem please ?

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1 Answer

You may have a corrupt PNG library. Try reinstalling it. Just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command(s) below:

sudo apt-get install --reinstall libpng*-dev

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