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## Lottie-iOS Issue
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## Check these before submitting:
- [] Updated to the latest version of Lottie (2.1.5)
- [] The issue doesn't involve an [Unsupported Feature](https://github.com/airbnb/lottie-ios/blob/master/README.md#currently-unsupported-after-effects-features)
- [] This issue isn't related to another open issue

## This issue is a:
- [] Non-Crashing Bug (Visual or otherwise)
- [] Crashing Bug
- [] Feature Request
- [] Regression (Something that once worked, but doesn't work anymore)

## What Platform are you on? 
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- [] MacOS
- [] iOS

## Expected Behavior 
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## Actual Behavior
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## Code Example

## Animation JSON
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