I try to Rotate images with `magick::image_rotate()` for different rotation angles with `mapply` and `image_rotate` doesn't get the right input

```
easterEggs <- c(
  'https://cdn.pixabay.com/photo/2017/02/04/20/28/easter-2038263_960_720.png',
  'https://cdn.pixabay.com/photo/2016/12/15/11/41/easter-1908690_960_720.png',
  'https://cdn.pixabay.com/photo/2017/03/28/09/56/easter-egg-2181493_960_720.png',
  'https://cdn.pixabay.com/photo/2019/01/29/13/49/egg-3962420_960_720.png',
  'https://cdn.pixabay.com/photo/2018/02/25/09/44/easter-3180067_960_720.png'
)

egg <- image_read(easterEggs)
eggRotation <- runif(length(egg), -90, 90)

egg <- mapply(image_rotate, egg, eggRotation)

```

This results in the Error

```
Error: The 'image' argument is not a magick image object.

```