我正在尝试安装该xvfb包但出现以下错误：
sudo apt install xvfb
[sudo] password for d1-user:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
xvfb
0 upgraded, 1 newly installed, 0 to remove and 92 not upgraded.
Need to get 786 kB of archives.
After this operation, 2.291 kB of additional disk space will be used.
Err:1 http://security.ubuntu.com/ubuntu groovy-security/universe amd64 xvfb amd64 2:1.20.9-2ubuntu1.3
404 Not Found [IP: 185.125.190.39 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/universe/x/xorg-server/xvfb_1.20.9-2ubuntu1.3_amd64.deb 404 Not Found [IP: 185.125.190.39 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?