Handling CRC mismatch when loading asset bundles

Hi, I'm using `AssetBundle.LoadFromFileAsync(bundlePath, crc);` (I've tried UnityWebRequest with file:// prefix with same results) to load pre-downloaded asset bundle. When the crc doesn't match, it just throws CRC Mismatch error and I'm unable to handle it and prevent app from crashing (on iOS). Is there any way to workaround this issue? I'm using Unity 2018.1.9f2. Thanks