can not commit into git
### How did it happen?
1. Commit to master


### Error log

```
{
	"nativeException": {},
	"line": 195,
	"column": 37,
	"sourceURL": "/Users/kdang/Library/Application Support/com.bohemiancoding.sketch3/Plugins/Git.sketchplugin/Contents/Sketch/Commit.js"
}
```