It occurs intermittently after some extent time.
I don’t know exactly how this crash happened.
Here’s the crash message.
**libc++abi.dylib: terminating with uncaught exception of type NSException**
terminating with uncaught exception of type NSException
*** Terminating app due to uncaught exception 'NSGenericException', reason: '*** Collection <__NSDictionaryM: 0x282e91500> was mutated while being enumerated.'