Need some positive support tonight! My student broke their nose in my class!

Hello teacher friends. I’ve been teaching nine classes per week on average the past three years. Tonight during one of my vinyasa classes, a regular of mine broke his nose during crow pose, our peak. I had them all including him set up with a bolster to fall on and still he ended up with a slight fracture. I feel just awful. I feel like I did all I could to teach this pose responsibility; went over all the safety features of wrists , breakers of the hands, cat pose and supine crow, to gaze forward and never down, to use a block under the head or the bolster for support. I feel emotionally like shit. Someone got injured because of me and my class. Please help me forgive myself. The student is a regular and is so lovely and kind. He was embarrassed and bleeding and of course I didn’t make a big deal but got the class into Savasana quickly , was towards the end of class, and got him ice and gave him my all. I just feel awful that someone got injured maybe because of me! Omg. This is a first and I feel terrible. How to you come back to teaching after a student gets injured? 🤕 😞 just feeling a bit shitty as a teacher and human right now. 😢