Fastboot command don’t work on Samsung device use heimdall
Samsung Firmware
It is easier to flash it with windows Odin software
But possible with a GNU/Linux PC with the heimdall-flash command in a terminal.
https://forum.xda-developers.com/wiki/Heimdall
https://forum.xda-developers.com/showthread.php?t=878686
TWRP and /e/
You can try downgrading twrp from the twrp install feature,
download the 3.3.1-0 version .img to the root of the SD card or the internal storage, reboot to twrp, tap on the install bouton, choose select storage, and select the 3.3.1-0.img, swipe to flash the ROM.
Or use the heimdall command with the device in download mode