Missing /opt/share and /usr/share/cups/model are no problem. These are only alternative places to search for PPDs for CUPS. They are not needed for printing and they are also not needed by the Brother drivers.
Missing /opt/share and /usr/share/ cups/model are no problem. These are only alternative places to search for PPDs for CUPS. They are not needed for printing and they are also not needed by the Brother drivers.