Just in the last few minutes noticed this. I attempted to update with Discover and it doesn’t respond. So ran from cli, here’s output from cli:
$ plasma-discover
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/PageRow.qml:311: Error: Error while loading page: qrc:/qml/BrowsingPage.qml:28 module "org.kde.kirigami" version 2.1 is not installed
WARNING: Cannot find style "org.kde.desktop" - fallback: "/usr/lib64/qt5/qml/QtQuick/Controls/Styles/Desktop"
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/Icon.qml:35:5: QML Image: Cannot open: file:///usr/lib64/qt5/qml/org/kde/kirigami.2/icons/update-low.svg
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/Icon.qml:35:5: QML Image: Cannot open: file:///usr/lib64/qt5/qml/org/kde/kirigami.2/icons/settings.svg
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/Icon.qml:35:5: QML Image: Cannot open: file:///usr/lib64/qt5/qml/org/kde/kirigami.2/icons/go-previous.svg
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/Icon.qml:35:5: QML Image: Cannot open: file:///usr/lib64/qt5/qml/org/kde/kirigami.2/icons/go-up.svg
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/PageRow.qml:51: TypeError: Cannot read property 'page' of null
The file "/home/ben79/.local/share/knewstuff3/discover_ktexteditor_codesnippets_core.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/skrooge_monthly.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/skrooge_unit.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/kdenlive_renderprofiles.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/ksieve_script.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/cgcgtk3.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/kfontinst.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/icons.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/wallpaper.knsregistry" could not be opened.
invalid kns backend! "/etc/xdg/servicemenu.knsrc" because: "Config group not found! Check your KNS3 installation."
The file "/home/ben79/.local/share/knewstuff3/kwinswitcher.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/k3btheme.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/kaddressbook_themes.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/kdenlive_titles.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/colorschemes.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/aurorae.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/emoticons.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/kwineffect.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/kdenlive_wipes.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/knotes_printing_theme.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/korganizer.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/sddmtheme.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/lookandfeel.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/xcursor.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/kdenlive_projectprofiles.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/cgcicon.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/kwinscripts.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/cgctheme.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/comic.knsregistry" could not be opened.
invalid kns backend! "/etc/xdg/ksysguard.knsrc" because: "Config group not found! Check your KNS3 installation."
The file "/home/ben79/.local/share/knewstuff3/messageviewer_header_themes.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/plasmoids.knsregistry" could not be opened.
The file "/home/ben79/.local/share/knewstuff3/accountwizard.knsregistry" could not be opened.
Discarding invalid backend "servicemenu.knsrc"
Discarding invalid backend "ksysguard.knsrc"
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/Icon.qml:35:5: QML Image: Cannot open: file:///usr/lib64/qt5/qml/org/kde/kirigami.2/icons/go-next.svg
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/Icon.qml:35:5: QML Image: Cannot open: file:///usr/lib64/qt5/qml/org/kde/kirigami.2/icons/go-next.svg
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/Icon.qml:35:5: QML Image: Cannot open: file:///usr/lib64/qt5/qml/org/kde/kirigami.2/icons/go-next.svg
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/Icon.qml:35:5: QML Image: Cannot open: file:///usr/lib64/qt5/qml/org/kde/kirigami.2/icons/go-next.svg
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/Icon.qml:35:5: QML Image: Cannot open: file:///usr/lib64/qt5/qml/org/kde/kirigami.2/icons/go-next.svg
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/Icon.qml:35:5: QML Image: Cannot open: file:///usr/lib64/qt5/qml/org/kde/kirigami.2/icons/go-next.svg
failed PackageKit::Transaction::Exit(ExitUnknown) PackageKit::Transaction(0x19d1040)
Transaction error: "Too few items to process" PackageKit::Transaction(0x19d1040)
failed PackageKit::Transaction::Exit(ExitFailed) PackageKit::Transaction(0x19d1040)
failed PackageKit::Transaction::Exit(ExitUnknown) PackageKit::Transaction(0x19d0e80)
Transaction error: "Too few items to process" PackageKit::Transaction(0x19d0e80)
failed PackageKit::Transaction::Exit(ExitFailed) PackageKit::Transaction(0x19d0e80)
org.kde.knewstuff.core: Could not find category "KAddressbook Theme"
invalid kns backend! "/etc/xdg/kaddressbook_themes.knsrc" because: "All categories are missing"
Discarding invalid backend "kaddressbook_themes.knsrc"
qrc:/qml/DiscoverDrawer.qml:155: TypeError: Cannot read property 'name' of null
kns error "/etc/xdg/kaddressbook_themes.knsrc" "All categories are missing"
org.kde.knewstuff.core: "Error transferring https://kdenlive.org/data/mltprofilesources.xml - server replied: Not Found"
kns error "/etc/xdg/kdenlive_projectprofiles.knsrc" "Loading of providers from file: https://kdenlive.org/data/mltprofilesources.xml failed"
org.kde.knewstuff.core: Could not find category "Xfce Icon Theme"
invalid kns backend! "/etc/xdg/cgcicon.knsrc" because: "All categories are missing"
Discarding invalid backend "cgcicon.knsrc"
qrc:/qml/DiscoverDrawer.qml:155: TypeError: Cannot read property 'name' of null
kns error "/etc/xdg/cgcicon.knsrc" "All categories are missing"