我正在尝试在我的 Ubuntu 20.10‘Groovy Gorilla’笔记本电脑上安装 GNS3 服务器，但遇到了一个奇怪的错误：
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:
gns3-server : Depends: ubridge (>= 0.9.14) but it is not installable
E: Unable to correct problems, you have held broken packages.
我不确定该如何继续。