While installing Stata16 I've encountered issues with libpng12 and libncurses.
Sadly libpng12 is no longer part of universe ppa which means it needs a fix.
original error messages
./stata: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory
./stata: error while loading shared libraries: libncurses.so.5: cannot open shared object file: No such file or directory
First one is easily resolved by installing libncurses for 64 bit system appropriate one is:
sudo apt-get install libncurses5
Second issue is solved by adding appropriate ppa fixing installation issues of older deb packages originating in changes in directory structure.
add-apt-repository ppa:linuxuprising/libpng12
sudo apt install libpng12-0
Finally a noncricial error of missing libcanberra can be resolved via
sudo apt install libcanberra-gtk-module libcanberra-gtk3-module
Hopefully this will save someones time in the future.