i am not able to unlock my bootloader it says:

(bootloader) slot-counttas: not found

(bootloader) slot-suffixes: not found

(bootloader) slot-suffixe: not found

...

(bootloader) 'get_unlock_da' is not a supported oem command

(bootloader) See 'fastboot oem help'

FAILED (remote failure)

finished. total time: 0.008s