twrp – Can not write about recovery with the help of fastboot

I'm trying to include TWRP recovery in my Mi a2 recovery. However when I type:

"fast flash recovery twrp.img"

I receive the error:

"FAILED (remote: & # 39; (recovery_a) No partition of this type & # 39;)"

Does anyone know how to fix this error? (I've tested the flash version of boot_b, and it worked.But this is not the recovery location)