我正在运行 18.10，最近 gnome-calculator 停止运行。从命令行运行它会得到以下结果：
jr@Ubuntu-HP:~$ gnome-calculator
You need to connect this snap to the gnome platform snap.
You can do this with those commands:
snap install gnome-3-26-1604
snap connect gnome-calculator:gnome-3-26-1604 gnome-3-26-1604
(the '3-26-1604' number defines the platform version and might change)
因此，请遵循以下说明：
jr@Ubuntu-HP:~$ snap install gnome-3-26-1604
snap "gnome-3-26-1604" is already installed, see 'snap help refresh'
jr@Ubuntu-HP:~$ snap connect gnome-calculator:gnome-3-26-1604 gnome-3-26-1604
error: snap "gnome-calculator" has no plug named "gnome-3-26-1604"
jr@Ubuntu-HP:~$ apt-cache policy gnome-calculator
gnome-calculator:
Installed: (none)
Candidate: 1:3.30.1-1ubuntu1
Version table:
1:3.30.1-1ubuntu1 …