Errors for Import Icons
When I try to import SVG files and apply a color mask, and convert to symbol, it is only importing the file, it is NOT applying a color mask, and NOT converting to a symbol. Here is the error I'm seeing in the Plugin Output console:

```
ERROR: TypeError: undefined is not an object (evaluating 'e.layers().reverse().forEach') «Plugin Output»
ArtboardChanged «Plugin Output»
```

