Conflicts trying to upgrade

Hi All, How do I go about fixing this? I got two FC27 servers I am trying to upgrade doing the same thing (same errors): # dnf system-upgrade download --refresh --releasever=28 --allowerasing --best Many thanks, -T Error: Transaction check error: file /usr/lib64/libjavascriptcoregtk-4.0.so.18 from install of webkit2gtk3-jsc-2.20.1-1.fc28.x86_64 conflicts with file from package webkitgtk4-jsc-2.20.2-1.fc27.x86_64 file /usr/bin/WebKitWebDriver from install of webkit2gtk3-2.20.1-1.fc28.x86_64 conflicts with file from package webkitgtk4-2.20.2-1.fc27.x86_64 file /usr/lib64/girepository-1.0/WebKit2-4.0.typelib from install of webkit2gtk3-2.20.1-1.fc28.x86_64 conflicts with file from package webkitgtk4-2.20.2-1.fc27.x86_64 file /usr/lib64/libwebkit2gtk-4.0.so.37 from install of webkit2gtk3-2.20.1-1.fc28.x86_64 conflicts with file from package webkitgtk4-2.20.2-1.fc27.x86_64 file /usr/lib64/webkit2gtk-4.0/injected-bundle/libwebkit2gtkinjectedbundle.so from install of webkit2gtk3-2.20.1-1.fc28.x86_64 conflicts with file from package webkitgtk4-2.20.2-1.fc27.x86_64 file /usr/libexec/webkit2gtk-4.0/MiniBrowser from install of webkit2gtk3-2.20.1-1.fc28.x86_64 conflicts with file from package webkitgtk4-2.20.2-1.fc27.x86_64 file /usr/libexec/webkit2gtk-4.0/WebKitNetworkProcess from install of webkit2gtk3-2.20.1-1.fc28.x86_64 conflicts with file from package webkitgtk4-2.20.2-1.fc27.x86_64 file /usr/libexec/webkit2gtk-4.0/WebKitPluginProcess from install of webkit2gtk3-2.20.1-1.fc28.x86_64 conflicts with file from package webkitgtk4-2.20.2-1.fc27.x86_64 file /usr/libexec/webkit2gtk-4.0/WebKitStorageProcess from install of webkit2gtk3-2.20.1-1.fc28.x86_64 conflicts with file from package webkitgtk4-2.20.2-1.fc27.x86_64 file /usr/libexec/webkit2gtk-4.0/WebKitWebProcess from install of webkit2gtk3-2.20.1-1.fc28.x86_64 conflicts with file from package webkitgtk4-2.20.2-1.fc27.x86_64 file /usr/libexec/webkit2gtk-4.0/jsc from install of webkit2gtk3-2.20.1-1.fc28.x86_64 conflicts with file from package webkitgtk4-2.20.2-1.fc27.x86_64 file /usr/libexec/webkit2gtk-4.0/WebKitPluginProcess2 from install of webkit2gtk3-plugin-process-gtk2-2.20.1-1.fc28.x86_64 conflicts with file from package webkitgtk4-plugin-process-gtk2-2.20.2-1.fc27.x86_64