Ubuntu 软件不工作，为什么 Ubuntu 20.04 中有两个软件中心？

我完全擦除了旧磁盘数据并安装了 20.04 LTS 版本的 Ubuntu，但 Dock 上的Ubuntu 软件无法启动。然后我在终端里跑：

sudo apt install --reinstall ubuntu-software

一切顺利。但它仍然没有打开。然后我在破折号中搜索“软件”并找到两个软件中心。一个名为Software和其他Ubuntu Software。软件启动，但Ubuntu 软件没有启动。在扩展坞中有无法启动的Ubuntu 软件。

另一件事，Runningsudo apt update说All packages are up to date，但在软件中它显示需要 2 个更新。这很奇怪。

为什么有两个软件中心？其中一个启动，另一个不启动。开始显示挂起的更新，但在终端中没有挂起的更新。

更新：根据第一个答案，我从snap-store终端运行并得到了这个：

16:30:11:0219 Gtk Failed to load module "canberra-gtk-module"
16:30:11:0225 Gtk Failed to load module "canberra-gtk-module"
16:30:14:0571 Gs  plugin appstream took 3.0 seconds to do setup
16:30:14:0580 Gs  enabled plugins: desktop-categories, fwupd, os-release, packagekit, packagekit-local, packagekit-offline, packagekit-proxy, packagekit-refine-repos, packagekit-refresh, packagekit-upgrade, packagekit-url-to-app, appstream, desktop-menu-path, hardcoded-blacklist, hardcoded-popular, modalias, odrs, packagekit-refine, rewrite-resource, packagekit-history, provenance, snap, systemd-updates, generic-updates, provenance-license, icons, key-colors, key-colors-metadata
16:30:14:0581 Gs  disabled plugins: dpkg, dummy, fedora-langpacks, fedora-pkgdb-collections, repos
16:30:16:0144 Gs  /etc/PackageKit/Vendor.conf file not found
16:30:17:0235 Gtk Could not load a pixbuf from icon theme.
This may indicate that pixbuf loaders or the mime database could not be found.
**
Gtk:ERROR:../gtk/gtkiconhelper.c:494:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /snap/snap-store/433/data-dir/icons/Yaru/16x16/status/image-missing.png: Unrecognized image file format (gdk-pixbuf-error-quark, 3)
Bail out! Gtk:ERROR:../gtk/gtkiconhelper.c:494:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /snap/snap-store/433/data-dir/icons/Yaru/16x16/status/image-missing.png: Unrecognized image file format (gdk-pixbuf-error-quark, 3)
Aborted (core dumped)