Symbols example fails to render in Sketch 47.1
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Erik Myers

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Symbols example throws error on render.

**Expected behavior:**
Symbols example renders with `npm run render`

**Observed behavior:**
Terminal throws error when running `npm run render`:
```
TypeError: MSImageData.alloc().initWithImage_convertColorSpace is not a function. (In 'MSImageData.alloc().initWithImage_convertColorSpace(image, false)', 'MSImageData.alloc().initWithImage_convertColorSpace' is undefined)
line: 2787
stack: makeImageDataFromUrl
renderBackingLayers
flexToSketchJSON
map@[native code]
flexToSketchJSON
makeSymbol
```

**How to reproduce:**
Follow the `How to use` instructions in the symbols example repo

**Sketch version:**
47.1