Colleagues, I won TWRP. The problem was that after installing twrp according to the instructions:
Installation:
1.fastboot boot twrp.img
2.go to Advanced> Flash Current TWRP
Then TWRP stopped seeing the internal memory, no matter what I did, put different versions from this branch, in the end it does not ask for a password and does not see the system! When you try to boot into an android, the recovery crashes and that's it! I thought I lost all my data! I had a root, magisk. As a result, I came to the conclusion that it was necessary to connect the USB flash drive via OTG and install TWRP from it, connected the USB flash drive, TWRP did not see it, and I decided to reboot the system! But rebooted through TWRP itself, reboot -recovery. And lo and behold, after rebooting, he asked for a password and decrypted the data and it all worked! Then follow the instructions. HURRAH!!!! Can someone help! OnePlus 7 Pro 8/256 Oxygen OS 11.0.2.1.GM21AA