我使用以下命令来修复该问题，但没有效果。
sudo apt install gnome-software
我收到很多警告。请帮我修复这个问题。
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
gnome-software-plugin-snap
Suggested packages:
gnome-software-plugin-flatpak
The following NEW packages will be installed:
gnome-software gnome-software-plugin-snap
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 965 kB of archives.
After this operation, 7,079 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://ca.archive.ubuntu.com/ubuntu focal-updates/main amd64 gnome-software amd64 3.36.1-0ubuntu0.20.04.0 [892 kB]
Get:2 http://ca.archive.ubuntu.com/ubuntu focal-updates/main amd64 gnome-software-plugin-snap amd64 3.36.1-0ubuntu0.20.04.0 [72.9 kB]
Fetched 965 kB in 0s (2,439 kB/s)
Selecting previously unselected package gnome-software.
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kage has no files currently installed
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ming package has no files currently installed
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assuming package has no files currently installed
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ckage has no files currently installed
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uming package has no files currently installed
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ckage has no files currently installed
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(Reading database ... 85609 files and directories currently installed.)
Preparing to unpack .../gnome-software_3.36.1-0ubuntu0.20.04.0_amd64.deb ...
Unpacking gnome-software (3.36.1-0ubuntu0.20.04.0) ...
Selecting previously unselected package gnome-software-plugin-snap.
Preparing to unpack .../gnome-software-plugin-snap_3.36.1-0ubuntu0.20.04.0_amd64
.deb ...
Unpacking gnome-software-plugin-snap (3.36.1-0ubuntu0.20.04.0) ...
Setting up gnome-software (3.36.1-0ubuntu0.20.04.0) ...
Processing triggers for desktop-file-utils (0.24-1ubuntu3) ...
Processing triggers for mime-support (3.64ubuntu1) ...
Processing triggers for gnome-menus (3.36.0-1ubuntu1) ...
Processing triggers for libglib2.0-0:amd64 (2.64.6-1~ubuntu20.04.2) ...
Processing triggers for man-db (2.9.1-1) ...
Setting up gnome-software-plugin-snap (3.36.1-0ubuntu0.20.04.0) ...