问题描述：
no application data found
解决方式：
sudo apt purge gnome-software ubuntu-software
sudo apt autoremove
sudo apt install gnome-software ubuntu-software
分析（英文，有阅读问题的网友请使用一下在线翻译）：
Starting Ubuntu Software on 16.04 cause an 'internal error'. Reinstalling it totally fixed it. It upgraded some packages which I presume were the cause of the problem.
Other fixes did not work on my new Ubuntu 16.04 LTS installation, but the expedient of reinstalling did!