我知道很多主题都有相同的问题，但我已经尝试了所有方法，但没有任何效果对我有用。所以我试图在我的 ubuntu 上安装 php 7.4。我已经完成了我在互联网上找到的以下命令：
apt install ca-certificates apt-transport-https wget gnupg
wget -q https://packages.sury.org/php/apt.gpg -O- | apt-key add -
echo "deb https://packages.sury.org/php/ buster main" | tee /etc/apt/sources.list.d/php.list
apt update
apt install php7.4
然后我收到错误：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved …