Unmet dependancy unity-control-center

I’m trying to bravely step forward into the “apt-world” and got these errors tonight testing upgrade from 16.04 to 19.04 on a clone (it’s.. well… complicated…):

The following packages have unmet dependencies:  indicator-bluetooth : Depends: unity-control-center but it is not going to be installed or                                 gnome-control-center but it is not going to be installed or                                 ubuntu-system-settings but it is not installable  libdouble-conversion1v5 : Conflicts: libdouble-conversion1 but 3.1.0-2 is to be installed                            Breaks: libdouble-conversion1 but 3.1.0-2 is to be installed  libqt5dbus5 : Depends: qtbase-abi-5-5-1  libqt5network5 : Depends: qtbase-abi-5-5-1 E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages. 

Does anyone know how to solve these errors or what additional information I can provide to help solve them?

The 16.04 to 19.04 upgrade is by script so I can install packages beforehand if that helps things out. I’ve recloned 16.04 and run the script five times to work out the other bugs and now I can almost see the light at the end of the tunnel.