/usr/lib/x86_64-linux-gnu/ is in plasma-workspace-dev 4:5.12.4-0ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/KRunnerAppDBusInterface/
/usr/lib/x86_64-linux-gnu/cmake/KRunnerAppDBusInterface/KRunnerAppDBusInterfaceConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/KSMServerDBusInterface/
/usr/lib/x86_64-linux-gnu/cmake/KSMServerDBusInterface/KSMServerDBusInterfaceConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibColorCorrect/
/usr/lib/x86_64-linux-gnu/cmake/LibColorCorrect/LibColorCorrectConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibColorCorrect/LibColorCorrectConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibColorCorrect/LibColorCorrectLibraryTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibColorCorrect/LibColorCorrectLibraryTargets.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibKWorkspace/
/usr/lib/x86_64-linux-gnu/cmake/LibKWorkspace/LibKWorkspaceConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibKWorkspace/LibKWorkspaceConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibKWorkspace/LibKWorkspaceLibraryTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibKWorkspace/LibKWorkspaceLibraryTargets.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibTaskManager/
/usr/lib/x86_64-linux-gnu/cmake/LibTaskManager/LibTaskManagerConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibTaskManager/LibTaskManagerConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibTaskManager/LibTaskManagerLibraryTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibTaskManager/LibTaskManagerLibraryTargets.cmake
/usr/lib/x86_64-linux-gnu/libcolorcorrect.so
/usr/lib/x86_64-linux-gnu/libkworkspace5.so
/usr/lib/x86_64-linux-gnu/libplasma-geolocation-interface.so
/usr/lib/x86_64-linux-gnu/libtaskmanager.so
/usr/lib/x86_64-linux-gnu/libweather_ion.so