Description of problem: If plasma-desktop-5.12.4-1.fc27.x86_64 is installed, the command update-desktop-database fails with following error: # update-desktop-database Error in file "/usr/share/applications/org.kde.kfontview.desktop": "font/otf" is an invalid MIME type ("font" is an unregistered media type) Error in file "/usr/share/applications/org.kde.kfontview.desktop": "font/ttf" is an invalid MIME type ("font" is an unregistered media type) Version-Release number of selected component (if applicable): plasma-desktop-5.12.4-1.fc27.x86_64 How reproducible: 100% Steps to Reproduce: 1. install plasma-desktop dnf -y install plasma-desktop 2. regenerate the desktop database update-desktop-database Actual results: Error in file "/usr/share/applications/org.kde.kfontview.desktop": "font/otf" is an invalid MIME type ("font" is an unregistered media type) Error in file "/usr/share/applications/org.kde.kfontview.desktop": "font/ttf" is an invalid MIME type ("font" is an unregistered media type) Expected results: database should update without errors
*** This bug has been marked as a duplicate of bug 1564650 ***