is a classic “symptom with many causes.” The key to fixing it is systematic debugging. Start with the simple checks (file integrity, TWRP version), then move to partition management and firmware updates. In 80% of cases, re-downloading the ROM and updating TWRP solves the problem immediately. For the remaining 20%, the advanced solutions like ADB sideload, formatting data, or manual fastboot flashing will get your custom ROM installed.
Open the log file and search for: