1、从源代码安装报错
aclocal: command not found
方法：sudo pacman -S automake autoconf
./autogen.sh: line 25: intltoolize: command not found
方法：sudo pacman -S intltool
2、CentOS Cannot find a valid baseurl for repo, base_7_x86_6
打开 vi /etc/sysconfig/network-scripts/ifcfg-eth0（不同的系统可能不同），把ONBOOT=no，改为ONBOOT=yes
重启网络：service network restart
3、ImportError cannot import name main
使用pip出现：Traceback (most recent call last):
File “/usr/bin/pip3”, line 9, in <module>
from pip import main
ImportError: cannot import name ‘main’
解决方法：输入以下命令重新安装pip。
sudo python3 -m pip uninstall pip && sudo apt install python3-pip –reinstall
4、Fix AppStream cache update completed, but some metadata was ignored due to errors
sudo apt install appstream/xenial-backports
$ appstreamcli –version
AppStream CLI tool version: 0.10.1
$ sudo appstreamcli refresh –force
AppStream cache update completed successfully.