i install appstream. i got this error;

The AppStream system cache was updated, but some errors were detected, which might lead to missing metadata. Refer to the verbose log for more information.
sudo /usr/bin/appstreamcli refresh-cache --force --verbose
[sudo] password for sonsuz: 
** (appstreamcli:8578): DEBUG: 19:21:47.415: Added /usr/share/app-info/xmls to XML metadata search path.
** (appstreamcli:8578): DEBUG: 19:21:47.415: Not adding metadata location '/var/lib/app-info': Is no directory
** (appstreamcli:8578): DEBUG: 19:21:47.415: Data did not change, no cache refresh needed.
** (appstreamcli:8578): DEBUG: 19:21:47.415: Forcing refresh anyway.
** (appstreamcli:8578): DEBUG: 19:21:47.415: Refreshing AppStream cache
** (appstreamcli:8578): DEBUG: 19:21:47.415: Searching for data in: /usr/share/app-info/xmls
** (appstreamcli:8578): DEBUG: 19:21:47.415: Reading: /usr/share/app-info/xmls/community.xml.gz
** (appstreamcli:8578): DEBUG: 19:21:47.614: Reading: /usr/share/app-info/xmls/core.xml.gz
** (appstreamcli:8578): DEBUG: 19:21:47.614: Reading: /usr/share/app-info/xmls/extra.xml.gz
** (appstreamcli:8578): DEBUG: 19:21:47.883: Metadata ignored: Detected colliding IDs: system/os/package/eclipse.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.883: Metadata ignored: Detected colliding IDs: system/os/package/libfm-pref-apps.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.883: Metadata ignored: Detected colliding IDs: system/os/package/eclipse.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.883: Metadata ignored: Detected colliding IDs: system/os/package/eclipse.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.883: Metadata ignored: Detected colliding IDs: system/os/package/eclipse.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.883: Metadata ignored: Detected colliding IDs: system/os/package/eclipse.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.884: Metadata ignored: Detected colliding IDs: system/os/package/org.libreoffice.kde was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.884: Metadata ignored: Detected colliding IDs: system/os/package/libreoffice-writer.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.884: Metadata ignored: Detected colliding IDs: system/os/package/libreoffice-draw.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.884: Metadata ignored: Detected colliding IDs: system/os/package/libreoffice-startcenter.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.884: Metadata ignored: Detected colliding IDs: system/os/package/libreoffice-math.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.884: Metadata ignored: Detected colliding IDs: system/os/package/libreoffice-base.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.884: Metadata ignored: Detected colliding IDs: system/os/package/libreoffice-impress.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.884: Metadata ignored: Detected colliding IDs: system/os/package/libreoffice-calc.desktop was already added with the same priority.
** (appstreamcli:8578): DEBUG: 19:21:47.885: system/os/package/evolution-rss extends system/os/package/evolution.desktop, but system/os/package/evolution.desktop was not found.
** (appstreamcli:8578): DEBUG: 19:21:47.887: system/os/package/gimp-data-extras extends system/os/package/gimp.desktop, but system/os/package/gimp.desktop was not found.
** (appstreamcli:8578): DEBUG: 19:21:47.887: system/os/package/nautilus-sendto extends system/os/package/nautilus.desktop, but system/os/package/nautilus.desktop was not found.
** (appstreamcli:8578): DEBUG: 19:21:47.888: system/os/package/org.kde.kio-gdrive extends system/os/package/org.kde.konqueror.desktop, but system/os/package/org.kde.konqueror.desktop was not found.
** (appstreamcli:8578): DEBUG: 19:21:47.892: system/os/package/org.kde.latte.shell extends system/os/package/latte-dock, but system/os/package/latte-dock was not found.
** (appstreamcli:8578): DEBUG: 19:21:47.892: system/os/package/org.kde.wacomtablet extends system/os/package/org.kde.systemsettings, but system/os/package/org.kde.systemsettings was not found.
** (appstreamcli:8578): DEBUG: 19:21:47.894: Stemming language is: tr
The AppStream system cache was updated, but some errors were detected, which might lead to missing metadata. Refer to the verbose log for more information.
[[email protected] ~]$ 

kde-discover not working…