This usually means your TWRP version is outdated. Update to the latest TWRP version.
: Samsung USB Drivers for your computer to recognize the tablet. Installation Steps download samsung tab 2 10.1 gt-p5100 android 7.1.2 firmware
If you want, I can write out the of the latest known stable build so you can search for it directly. This usually means your TWRP version is outdated
: Use a tool like Heimdall or Odin to install the TWRP recovery image onto your tablet. download samsung tab 2 10.1 gt-p5100 android 7.1.2 firmware