After upgrading my Oneplus 6 to Android 10 from Android Pie using the System Updater, I tried to reinstall TWRP using the both the most up to date image from https://dl.twrp.me/enchilada/. I tried both the most up to date image and the one I had used previously to install TWRP.
When I run
fastboot boot twrp.img in the bootloader, it gets stuck on "Fastboot Mode". If I hold the power button, the phone turns off and I can boot it again normally. How do I boot to TWRP properly?