I need to restore from a backup. However TWRP stopped asking me for the password to decrypt. In the terminal emulator I tried
twrp decrypt 1234 but got the error "Failed to decrypt data". Whenever I try to use any other feature in TWRP, such as restore, it says "Failed to decrypt data". and "extracTarFork() process ended with ERROR: 255"
How can I restore from a backup?