当我安装 flatpak（尝试）时出现以下错误：
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:
flatpak : Depends: libmalcontent-0-0 (>= 0.6.0) but it is not installable
Depends: libostree-1-1 (>= 2020.8) but it is not installable
E: Unable to correct problems, you have held broken packages.
我尝试了互联网上的所有教程，但还是不知所措。有什么想法吗？