$ sudo dnf update -y --best --allowerasing
Last metadata expiration check: 0:00:25 ago on Mon 14 Oct 2019 09:20:33 AM CDT.
Error:
 Problem: problem with installed package calibre-3.36.0-4.fc30.x86_64
  - cannot install the best update candidate for package calibre-3.36.0-4.fc30.x86_64
  - nothing provides libQt5Core.so.5(Qt_5.12.4_PRIVATE_API)(64bit) needed by calibre-3.36.0-8.fc30.x86_64
  - nothing provides libQt5Gui.so.5(Qt_5.12.4_PRIVATE_API)(64bit) needed by calibre-3.36.0-8.fc30.x86_64
  - nothing provides qt5-qtbase(x86-64) = 5.12.4 needed by calibre-3.36.0-8.fc30.x86_64
(try to add '--skip-broken' to skip uninstallable packages)