I fix it by reinstalling LibreOffice. I think this is problem with new instalation (minimal mode). In this mode installer do full install and next remove (in incorrect way?) unwanted packages.
Step 1. Remove all packages with libreoffice* name Step 2. Do apt autoremove commend Step 3. Install apt install libreoffice ** Changed in: libreoffice (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1768756 Title: Libreoffice 6 does not start on Kubuntu 18.04 (clean install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1768756/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs