Sometimes, my app crashes and give me smth like this:
*** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSConcreteMutableData rangeOfData:options:range:]: range {588, 18446744073709551038} causes integer overflow'
*** First throw call stack:
(0x18240b164 0x181654528 0x18240b0ac 0x182d98a54 0x10131ffcc 0x10131f9d8 0x10131e9fc 0x10131eaec 0x182b47970 0x182de1ba0 0x182d21894 0x182d114c4 0x10401d28c 0x1040299e4 0x10401d28c 0x1040299e4 0x1040298a4 0x182de3878 0x10401d28c 0x10402a678 0x104028f08 0x10402e9d0 0x10402e6f4 0x18203306c 0x182032b6c)
libc++abi.dylib: terminating with uncaught exception of type NSException

What you can tell me about this?