核心数据迁移 - iOS 8设备上的Appstore构建崩溃，在iOS 9上运行

My app store update build is crashing, it's a core data crash but I am getting this crash on only iOS 8 devices, it is working fine on iOS 9 devices. I have correctly performed light weight migration as well added the new model version keeping the old one as a base, added the dictionary in options as well while adding "addPersistentStoreWithType".My app store update build is crashing, it's a c