Ubuntu E:无法纠正问题，您持有的是破损的包裹

我刚刚安装了Ubuntu19.10，当时我正试图安装git，但出现了以下错误：

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 out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 git : Depends: liberror-perl but it is not installable
E: Unable to correct problems, you have held broken packages.

当同样的问题被问到时，我尝试了之前给出的每一个解决方案，但没有一个有效。大多数解决方案建议如下：

sudo apt update
sudo apt upgrade
sudo apt install git

但这些都不起作用。 为什么会出现此错误 .帮我解决这个问题

谢谢。

希望这能奏效。 1.开放式软件和更新

更新选项卡

检查并确保启用了重要的安全更新（Xenial security）和建议的更新（Xenial update）

---

重新加载源代码，然后再次尝试安装所需的软件或库。

这似乎是一个问题。