Hello and welcome to the forums!
The simple fix is to make sure the filename matches letter for letter what you have in your code. It’s probably easier to change your code to match the file name. Windows (and macOS for that matter) have operating systems that don’t pay attention to upper and lower case letters. However Android and iOS do care. That warning is telling you that you’re trying to load an image in and it can’t find the file in your project, but it found a file with the same name, however some of the letters are capitalized differently.
Fix one or the other so that they match exactly. If not, when you go to install your app on an Android device you will get an error.
Rob