*** Terminating app due to uncaught exception 'NSGenericException', reason: '*** Collection <__NSArrayM: 0x1c4e59620> was mutated while being enumerated.'
*** First throw call stack:
(0x1854f6364 0x18473c528 0x1854f59f0 0x1009a39a8 0x1009a3b64 0x185dfd4c4 0x185ecf894 0x101a4528c 0x101a52678 0x101a50f08 0x101a569d0 0x101a566f4 0x18511b06c 0x18511ab6c)
libc++abi.dylib: terminating with uncaught exception of type NSExceptio
*** Terminating app due to uncaught exception 'NSGenericException', reason: '*** Collection <__NSArrayM: 0x1c4e59620> was mutated while being enumerated.'
*** First throw call stack:
(0x1854f6364 0x18473c528 0x1854f59f0 0x1009a39a8 0x1009a3b64 0x185dfd4c4 0x185ecf894 0x101a4528c 0x101a52678 0x101a50f08 0x101a569d0 0x101a566f4 0x18511b06c 0x18511ab6c)
libc++abi.dylib: terminating with uncaught exception of type NSExceptio