Hello, I have Plasma 5, running on Slackware64-current, but when it starts, the desktop plasma does not go up, and when I run it manually through kconsole, the following error is presented:

bash-5.0# plasma-desktop
QDBusObjectPath: invalid path ""
plasma-desktop(6752)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
plasma-desktop(6752)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
plasma-desktop(6752)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
plasma-desktop(6752)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
plasma-desktop(6752) PanelShadows::Private::setupPixmaps: top margin hint is: QSize(0, 0)
plasma-desktop(6752) PanelShadows::Private::setupPixmaps: right margin hint is: QSize(0, 0)
plasma-desktop(6752)/libplasma Plasma::PackagePrivate::isValid: Could not find required directory images
bash-5.0#

How can I solve this problem?

try the command plasmashell instead...

I don't know slackware, but on most other systems plasma-desktop is a metapackage used to install Plasma...