hey, something similar happened to me and I am already very frustrated, I had done the whole process of installing the havoc os ROM and everything was going well, until when installing the MagisK zip from TWRP, it remained on the loading screen (a white circle and It started again and it did not start), I went back to TWRP and reinstalled the backup but when the process is going to finish the following appears: "failed to mount '/ product' (structure needs cleaning), it does not allow me to swipe, install, literally nothing process because it tells me that at the end. I need help, I already fixed the mount system but I haven't found anything for this ...