mplab X in linux - can see but cannot program PIC32MZ / PIC32MX Starter kit in Hardware (sl149q)

I am trying to use MPLAB X in Linux Mint but cannot program either of my two Starter kit boards (PIC32MZ or PIC32MX Ethernet Starter kits). When I plug them in, they show up in the Hardware tools under Microchip Kits. For example,https://www.microchip...