Fatal Exception: NSInvalidArgumentException

I've experienced this Random crash in runtime of my app randomly, any idea about this?

<img width="1105" alt="screen shot 2018-06-18 at 4 12 25 pm" src="https://user-images.githubusercontent.com/9667496/41525114-83d0ba90-7312-11e8-9fde-941442cbb316.png">
