Used the GUI version on my mt6763 Oreo 8.1 tecno camon X device. Porting and flashing was successful but I couldn't Boot because of *DECRYPTION UNSUCCESSFUL*. I went out around it and realized internal storage wasn't mounted.. the only way out of that was to wipe everything including system. And further have to repair system partition at recovery. As you know, that leaves no OS on the phone. I tried flashing custom treble project rom but system partition was not available to flash unto neither did I have my stock rom to boot as well. If flash stock, I lose all this boot.img patching and twrp recovery. How do I go about this problem please?