I turned on the computer this morning, and the shortcut I made using the "super+down" key to reduce the computer's sound volume did not work correctly. "super+up" worked as expected, it increases my sound volume, but "super+down" didn't work. It seems that when restarting the computer, there is a misconfiguration of the shortcut keys I created.

org.gnome.TextEditor keybindings 'default'
org.gnome.desktop.wm.keybindings activate-window-menu ['<Alt>space']
org.gnome.desktop.wm.keybindings always-on-top @as []
org.gnome.desktop.wm.keybindings begin-move ['<Alt>F7']
org.gnome.desktop.wm.keybindings begin-resize ['<Alt>F8']
org.gnome.desktop.wm.keybindings close ['<Alt>F4']
org.gnome.desktop.wm.keybindings cycle-group ['<Alt>F6']
org.gnome.desktop.wm.keybindings cycle-group-backward ['<Shift><Alt>F6']
org.gnome.desktop.wm.keybindings cycle-panels ['<Control><Alt>Escape']
org.gnome.desktop.wm.keybindings cycle-panels-backward ['<Shift><Control><Alt>Escape']
org.gnome.desktop.wm.keybindings cycle-windows ['<Alt>Escape']
org.gnome.desktop.wm.keybindings cycle-windows-backward ['<Shift><Alt>Escape']
org.gnome.desktop.wm.keybindings lower @as []
org.gnome.desktop.wm.keybindings maximize ['<Control><Super>Up']
org.gnome.desktop.wm.keybindings maximize-horizontally @as []
org.gnome.desktop.wm.keybindings maximize-vertically @as []
org.gnome.desktop.wm.keybindings minimize ['<Super>h']
org.gnome.desktop.wm.keybindings move-to-center @as []
org.gnome.desktop.wm.keybindings move-to-corner-ne @as []
org.gnome.desktop.wm.keybindings move-to-corner-nw @as []
org.gnome.desktop.wm.keybindings move-to-corner-se @as []
org.gnome.desktop.wm.keybindings move-to-corner-sw @as []
org.gnome.desktop.wm.keybindings move-to-monitor-down ['<Super><Shift>Down']
org.gnome.desktop.wm.keybindings move-to-monitor-left ['<Super><Shift>Left']
org.gnome.desktop.wm.keybindings move-to-monitor-right ['<Super><Shift>Right']
org.gnome.desktop.wm.keybindings move-to-monitor-up ['<Super><Shift>Up']
org.gnome.desktop.wm.keybindings move-to-side-e @as []
org.gnome.desktop.wm.keybindings move-to-side-n @as []
org.gnome.desktop.wm.keybindings move-to-side-s @as []
org.gnome.desktop.wm.keybindings move-to-side-w @as []
org.gnome.desktop.wm.keybindings move-to-workspace-1 ['<Super><Shift>Home']
org.gnome.desktop.wm.keybindings move-to-workspace-10 @as []
org.gnome.desktop.wm.keybindings move-to-workspace-11 @as []
org.gnome.desktop.wm.keybindings move-to-workspace-12 @as []
org.gnome.desktop.wm.keybindings move-to-workspace-2 @as []
org.gnome.desktop.wm.keybindings move-to-workspace-3 @as []
org.gnome.desktop.wm.keybindings move-to-workspace-4 @as []
org.gnome.desktop.wm.keybindings move-to-workspace-5 @as []
org.gnome.desktop.wm.keybindings move-to-workspace-6 @as []
org.gnome.desktop.wm.keybindings move-to-workspace-7 @as []
org.gnome.desktop.wm.keybindings move-to-workspace-8 @as []
org.gnome.desktop.wm.keybindings move-to-workspace-9 @as []
org.gnome.desktop.wm.keybindings move-to-workspace-down ['<Control><Shift><Alt>Down']
org.gnome.desktop.wm.keybindings move-to-workspace-last ['<Super><Shift>End']
org.gnome.desktop.wm.keybindings move-to-workspace-left ['<Super><Shift>Page_Up', '<Super><Shift><Alt>Left', '<Control><Shift><Alt>Left']
org.gnome.desktop.wm.keybindings move-to-workspace-right ['<Super><Shift>Page_Down', '<Super><Shift><Alt>Right', '<Control><Shift><Alt>Right']
org.gnome.desktop.wm.keybindings move-to-workspace-up ['<Control><Shift><Alt>Up']
org.gnome.desktop.wm.keybindings panel-main-menu ['<Alt>F1']
org.gnome.desktop.wm.keybindings panel-run-dialog ['<Alt>F2']
org.gnome.desktop.wm.keybindings raise @as []
org.gnome.desktop.wm.keybindings raise-or-lower @as []
org.gnome.desktop.wm.keybindings set-spew-mark @as []
org.gnome.desktop.wm.keybindings show-desktop ['<Primary><Super>d', '<Primary><Alt>d', '<Super>d']
org.gnome.desktop.wm.keybindings switch-applications ['<Super>Tab']
org.gnome.desktop.wm.keybindings switch-applications-backward ['<Shift><Super>Tab']
org.gnome.desktop.wm.keybindings switch-group ['<Super>Above_Tab', '<Alt>Above_Tab']
org.gnome.desktop.wm.keybindings switch-group-backward ['<Shift><Super>Above_Tab', '<Shift><Alt>Above_Tab']
org.gnome.desktop.wm.keybindings switch-input-source ['<Super>space', 'XF86Keyboard']
org.gnome.desktop.wm.keybindings switch-input-source-backward ['<Shift><Super>space', '<Shift>XF86Keyboard']
org.gnome.desktop.wm.keybindings switch-panels ['<Control><Alt>Tab']
org.gnome.desktop.wm.keybindings switch-panels-backward ['<Shift><Control><Alt>Tab']
org.gnome.desktop.wm.keybindings switch-to-workspace-1 ['<Super>Home']
org.gnome.desktop.wm.keybindings switch-to-workspace-10 @as []
org.gnome.desktop.wm.keybindings switch-to-workspace-11 @as []
org.gnome.desktop.wm.keybindings switch-to-workspace-12 @as []
org.gnome.desktop.wm.keybindings switch-to-workspace-2 @as []
org.gnome.desktop.wm.keybindings switch-to-workspace-3 @as []
org.gnome.desktop.wm.keybindings switch-to-workspace-4 @as []
org.gnome.desktop.wm.keybindings switch-to-workspace-5 @as []
org.gnome.desktop.wm.keybindings switch-to-workspace-6 @as []
org.gnome.desktop.wm.keybindings switch-to-workspace-7 @as []
org.gnome.desktop.wm.keybindings switch-to-workspace-8 @as []
org.gnome.desktop.wm.keybindings switch-to-workspace-9 @as []
org.gnome.desktop.wm.keybindings switch-to-workspace-down ['<Control><Alt>Down']
org.gnome.desktop.wm.keybindings switch-to-workspace-last ['<Super>End']
org.gnome.desktop.wm.keybindings switch-to-workspace-left ['<Super>Page_Up', '<Super><Alt>Left', '<Control><Alt>Left']
org.gnome.desktop.wm.keybindings switch-to-workspace-right ['<Super>Page_Down', '<Super><Alt>Right', '<Control><Alt>Right']
org.gnome.desktop.wm.keybindings switch-to-workspace-up ['<Control><Alt>Up']
org.gnome.desktop.wm.keybindings switch-windows ['<Alt>Tab']
org.gnome.desktop.wm.keybindings switch-windows-backward ['<Shift><Alt>Tab']
org.gnome.desktop.wm.keybindings toggle-above @as []
org.gnome.desktop.wm.keybindings toggle-fullscreen @as []
org.gnome.desktop.wm.keybindings toggle-maximized ['<Alt>F10']
org.gnome.desktop.wm.keybindings toggle-on-all-workspaces @as []
org.gnome.desktop.wm.keybindings unmaximize ['<Control><Super>Down']
org.gnome.mutter.keybindings cancel-input-capture ['<Super><Shift>Escape']
org.gnome.mutter.keybindings rotate-monitor ['XF86RotateWindows']
org.gnome.mutter.keybindings switch-monitor ['<Super>p', 'XF86Display']
org.gnome.mutter.keybindings toggle-tiled-left ['<Control><Super>Left']
org.gnome.mutter.keybindings toggle-tiled-right ['<Control><Super>Right']
org.gnome.mutter.wayland.keybindings restore-shortcuts ['<Super>Escape']
org.gnome.mutter.wayland.keybindings switch-to-session-1 ['<Primary><Alt>F1']
org.gnome.mutter.wayland.keybindings switch-to-session-10 ['<Primary><Alt>F10']
org.gnome.mutter.wayland.keybindings switch-to-session-11 ['<Primary><Alt>F11']
org.gnome.mutter.wayland.keybindings switch-to-session-12 ['<Primary><Alt>F12']
org.gnome.mutter.wayland.keybindings switch-to-session-2 ['<Primary><Alt>F2']
org.gnome.mutter.wayland.keybindings switch-to-session-3 ['<Primary><Alt>F3']
org.gnome.mutter.wayland.keybindings switch-to-session-4 ['<Primary><Alt>F4']
org.gnome.mutter.wayland.keybindings switch-to-session-5 ['<Primary><Alt>F5']
org.gnome.mutter.wayland.keybindings switch-to-session-6 ['<Primary><Alt>F6']
org.gnome.mutter.wayland.keybindings switch-to-session-7 ['<Primary><Alt>F7']
org.gnome.mutter.wayland.keybindings switch-to-session-8 ['<Primary><Alt>F8']
org.gnome.mutter.wayland.keybindings switch-to-session-9 ['<Primary><Alt>F9']
org.gnome.settings-daemon.plugins.media-keys custom-keybindings @as []
org.gnome.shell.extensions.tiling-assistant overridden-settings {'org.gnome.mutter.edge-tiling': <@mb nothing>, 'org.gnome.mutter.keybindings.toggle-tiled-left': <@mb nothing>, 'org.gnome.mutter.keybindings.toggle-tiled-right': <@mb nothing>}
org.gnome.shell.keybindings focus-active-notification ['<Super>n']
org.gnome.shell.keybindings open-new-window-application-1 ['<Super><Control>1']
org.gnome.shell.keybindings open-new-window-application-2 ['<Super><Control>2']
org.gnome.shell.keybindings open-new-window-application-3 ['<Super><Control>3']
org.gnome.shell.keybindings open-new-window-application-4 ['<Super><Control>4']
org.gnome.shell.keybindings open-new-window-application-5 ['<Super><Control>5']
org.gnome.shell.keybindings open-new-window-application-6 ['<Super><Control>6']
org.gnome.shell.keybindings open-new-window-application-7 ['<Super><Control>7']
org.gnome.shell.keybindings open-new-window-application-8 ['<Super><Control>8']
org.gnome.shell.keybindings open-new-window-application-9 ['<Super><Control>9']
org.gnome.shell.keybindings screenshot ['<Shift>Print']
org.gnome.shell.keybindings screenshot-window ['<Alt>Print']
org.gnome.shell.keybindings shift-overview-down ['<Super><Alt>Down']
org.gnome.shell.keybindings shift-overview-up ['<Super><Alt>Up']
org.gnome.shell.keybindings show-screen-recording-ui ['<Ctrl><Shift><Alt>R']
org.gnome.shell.keybindings show-screenshot-ui ['Print']
org.gnome.shell.keybindings switch-to-application-1 ['<Super>1']
org.gnome.shell.keybindings switch-to-application-2 ['<Super>2']
org.gnome.shell.keybindings switch-to-application-3 ['<Super>3']
org.gnome.shell.keybindings switch-to-application-4 ['<Super>4']
org.gnome.shell.keybindings switch-to-application-5 ['<Super>5']
org.gnome.shell.keybindings switch-to-application-6 ['<Super>6']
org.gnome.shell.keybindings switch-to-application-7 ['<Super>7']
org.gnome.shell.keybindings switch-to-application-8 ['<Super>8']
org.gnome.shell.keybindings switch-to-application-9 ['<Super>9']
org.gnome.shell.keybindings toggle-application-view ['<Super>a']
org.gnome.shell.keybindings toggle-message-tray ['<Super>v', '<Super>m']
org.gnome.shell.keybindings toggle-overview @as []
org.gnome.shell.keybindings toggle-quick-settings ['<Super>s']