首先我运行sudo apt update并sudo apt update工作正常，但运行后sudo apt upgrade出现以下错误。
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following NEW packages will be installed:
linux-headers-5.4.0-59 linux-headers-5.4.0-59-generic linux-image-5.4.0-59-generic linux-modules-5.4.0-59-generic linux-modules-extra-5.4.0-59-generic
The following packages will be upgraded:
libasound2 libasound2-data libatopology2 libproxy1-plugin-gsettings libproxy1-plugin-networkmanager libproxy1v5 linux-generic-hwe-20.04 linux-headers-generic-hwe-20.04
linux-image-generic-hwe-20.04 linux-libc-dev nautilus-sendto python-apt-common python3-apt
13 upgraded, 5 newly installed, 0 to remove and 0 not upgraded.
Need to get 72.5 kB/76.0 MB of archives.
After this …