TWRP is stuck at the boot screen when trying to flash twrp on Mi A2

I am trying to root my Mi A2 android phone. I am following this tutorial. When I try fastboot boot path/to/twrp/image the phone gets stuck on the boot screen. What am I doing wrong? Is it because a) I don't have required drivers or because b) I have to disable force encryption? If a) I have to install new drivers what are they, where do I get them and how do I install them? If it is b) about disabling force encryption then how to do it?