When I was launching the program “Discover” at KDE desktop, at the feature page it show “Unable to load applications. Please verify Internet connectivity”.
But I am pretty sure there was the internet connectivity.
Launched in terminal, I saw the following errors:
ddtty@localhost:/media> plasma-discover
invalid kns backend! "/usr/share/knsrcfiles/ksysguard.knsrc" because: "Config group not found! Check your KNS3 installation."
kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "KWin/Effect"
kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "KWin/Script"
kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "KWin/WindowSwitcher"
kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "Plasma/Wallpaper"
kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "Plasma/Comic"
kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "Plasma/LookAndFeel"
kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "Plasma/LookAndFeel"
kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "Plasma/Theme"
adding empty sources model QStandardItemModel(0x55e7fec42a40)
org.kde.plasma.libdiscover: Couldn't find a category for "fwupd-backend"
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/private/PrivateActionToolButton.qml:77:5: QML Binding: Binding loop detected for property "value"
** (process:10254): WARNING **: 20:09:02.022: Found icon of unknown type, skipping it: unknown
remote hasn't changed: lvfs
took really long to fetch KNSBackend(0x55e7feb4be80, name = "/usr/share/knsrcfiles/sddmtheme.knsrc")
took really long to fetch KNSBackend(0x55e7fe4f9260, name = "/usr/share/knsrcfiles/konsole.knsrc")
took really long to fetch KNSBackend(0x55e7feb823c0, name = "/usr/share/knsrcfiles/aurorae.knsrc")
took really long to fetch KNSBackend(0x55e7feb90000, name = "/usr/share/knsrcfiles/kwineffect.knsrc")
took really long to fetch KNSBackend(0x55e7feb8a030, name = "/usr/share/knsrcfiles/kwinscripts.knsrc")
took really long to fetch KNSBackend(0x55e7feb876b0, name = "/usr/share/knsrcfiles/kwinswitcher.knsrc")
took really long to fetch KNSBackend(0x55e7feb908b0, name = "/usr/share/knsrcfiles/window-decorations.knsrc")
took really long to fetch KNSBackend(0x55e7feb879f0, name = "/usr/share/knsrcfiles/plasmoids.knsrc")
took really long to fetch KNSBackend(0x55e7feb967e0, name = "/usr/share/knsrcfiles/wallpaper.knsrc")
took really long to fetch KNSBackend(0x55e7feb95280, name = "/usr/share/knsrcfiles/wallpaperplugin.knsrc")
took really long to fetch KNSBackend(0x55e7feba54e0, name = "/usr/share/knsrcfiles/comic.knsrc")
took really long to fetch KNSBackend(0x55e7feb95d90, name = "/usr/share/knsrcfiles/colorschemes.knsrc")
took really long to fetch KNSBackend(0x55e7feb9ffb0, name = "/usr/share/knsrcfiles/emoticons.knsrc")
took really long to fetch KNSBackend(0x55e7febabe10, name = "/usr/share/knsrcfiles/gtk2_themes.knsrc")
took really long to fetch KNSBackend(0x55e7febb3950, name = "/usr/share/knsrcfiles/gtk3_themes.knsrc")
took really long to fetch KNSBackend(0x55e7feba2270, name = "/usr/share/knsrcfiles/icons.knsrc")
took really long to fetch KNSBackend(0x55e7febc3400, name = "/usr/share/knsrcfiles/ksplash.knsrc")
took really long to fetch KNSBackend(0x55e7febbdaf0, name = "/usr/share/knsrcfiles/lookandfeel.knsrc")
took really long to fetch KNSBackend(0x55e7febc5750, name = "/usr/share/knsrcfiles/plasma-themes.knsrc")
took really long to fetch KNSBackend(0x55e7febb7120, name = "/usr/share/knsrcfiles/xcursor.knsrc")
took really long to fetch KNSBackend(0x55e7febc88b0, name = "/usr/share/knsrcfiles/ksieve_script.knsrc")
took really long to fetch KNSBackend(0x55e7febc03b0, name = "/usr/share/knsrcfiles/accountwizard.knsrc")
took really long to fetch KNSBackend(0x55e7febc9ed0, name = "/usr/share/knsrcfiles/messageviewer_header_themes.knsrc")
took really long to fetch KNSBackend(0x55e7febc9b00, name = "/usr/share/knsrcfiles/knotes_printing_theme.knsrc")
took really long to fetch KNSBackend(0x55e7febc4a10, name = "/usr/share/knsrcfiles/korganizer.knsrc")
took really long to fetch KNSBackend(0x55e7febd1360, name = "/usr/share/knsrcfiles/discover_ktexteditor_codesnippets_core.knsrc")
took really long to fetch PackageKitBackend(0x55e7fec0db20)
Any ideals what was going wrong?
Thanks