ubuntu18.04: 计算器打开失败问题分析即解决（error while loading shared libraries: libgtk-3.so.0）
$ gnome-calculator
/snap/gnome-calculator/544/usr/bin/gnome-calculator: error while loading shared libraries: libgtk-3.so.0: cannot open shared object file: No such file or directory用 ldd /snap/gnome-calculator/544/usr/bin/gnome-calculator 命令发现一个not found so库
$ ldd /snap/gnome-calculator/544/usr/bin/gnome-calculator | grep "not found"
libgtksourceview-4.so.0 => not found解决办法：
卸载再重新安装：
sudo apt remove gnome-calculator
sudo apt install gnome-calculator
