class UnsupportedMediaTypeException(Exception):
    pass


class InvalidFileException(Exception):
    pass


class InvalidFileNameException(Exception):
    pass


class ImageAlreadyExistsException(Exception):
    pass


class NoSuchAppException(Exception):
    pass


class NoSuchImageException(Exception):
    pass


class AppNameExists(Exception):
    pass


class NoSuchRatingException(Exception):
    pass
