Crash resolved.
If there is no LED flashlight, the app can now use the screen brightness and thus still be useful.
Use the LED flash of your camera as a FlashLight.
You can choose between "Constant light" or "Strobe (blinking) light".
There is also a widget option for the home screen with simple configuration.
You can have many widgets on the screen, so you can pick from lists of icons, backgrounds and watermarks and see what you will like.