很长一段时间以来，每当我安装软件包时，我都会遇到问题。例如，当我尝试安装外星人包时，我得到的结果是：
\n\nsudo apt-get install alien\nReading package lists... Done\nBuilding dependency tree \nReading state information... Done\nalien is already the newest version (8.95).\n0 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.\n4 not fully installed or removed.\nAfter this operation, 0 B of additional disk space will be used.\nDo you want to continue? [O/n] O\nSetting up update-notifier-common (3.192.1.7) ...\nTraceback (most recent call last):\nFile "/usr/lib/update-notifier/package-data-downloader", line 24, in <module>\nimport debian.deb822\nFile "/usr/lib/python3/dist-packages/debian/deb822.py", line 38, in <module>\nimport chardet\nModuleNotFoundError: No module …