*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Operation is invalid after previous operation.'
*** First throw call stack:
(
	0   CoreFoundation                      0x000000010a393c65 __exceptionPreprocess + 165
	1   libobjc.A.dylib                     0x000000010b33bbb7 objc_exception_throw + 45
	2   CoreFoundation                      0x000000010a393b9d +[NSException raise:format:] + 205
	3   Parse                               0x0000000108a64e77 -[PFRelationOperation applyToValue:forKey:] + 951
	4   Parse                               0x0000000108abce66 +[PFObjectUtilities newValueByApplyingFieldOperation:toDictionary:forKey:] + 166
	5   Parse                               0x0000000108ab2e89 -[PFObjectEstimatedData applyFieldOperation:forKey:] + 121
	6   Parse                               0x0000000108a9a6c9 -[PFObject(Private) performOperation:forKey:] + 153
	7   Parse                               0x0000000108b0b3b2 __24-[PFRelation addObject:]_block_invoke_2 + 290
	8   Parse                               0x0000000108b0b202 __24-[PFRelation addObject:]_block_invoke + 146
	9   libdispatch.dylib                   0x000000010bbc3614 _dispatch_client_callout + 8
	10  libdispatch.dylib                   0x000000010bba9002 _dispatch_barrier_sync_f_invoke + 365
	11  Parse                               0x0000000108b0b0ae -[PFRelation addObject:] + 270
	12  Fly Dev                             0x0000000108022d8a _TFC7Fly_Dev5Image4ratefSiT_ + 682
	13  Fly Dev                             0x00000001080885cf _TFC7Fly_Dev17ExploreController9saveScorefSiT_ + 671
	14  Fly Dev                             0x000000010808b139 _TTWC7Fly_Dev17ExploreControllerS_18RatingViewDelegateS_FS1_9saveScorefSiT_ + 73
	15  Fly Dev                             0x00000001080922a6 _TFC7Fly_Dev10RatingView12touchesEndedfTGVs3SetCSo7UITouch_9withEventGSqCSo7UIEvent__T_ + 486
	16  Fly Dev                             0x00000001080923d6 _TToFC7Fly_Dev10RatingView12touchesEndedfTGVs3SetCSo7UITouch_9withEventGSqCSo7UIEvent__T_ + 102
	17  UIKit                               0x0000000108f42958 -[UIWindow _sendTouchesForEvent:] + 735
	18  UIKit                               0x0000000108f43282 -[UIWindow sendEvent:] + 682
	19  UIKit                               0x0000000108f09541 -[UIApplication sendEvent:] + 246
	20  UIKit                               0x0000000108f16cdc _UIApplicationHandleEventFromQueueEvent + 18265
	21  UIKit                               0x0000000108ef159c _UIApplicationHandleEventQueue + 2066
	22  CoreFoundation                      0x000000010a2c7431 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
	23  CoreFoundation                      0x000000010a2bd2fd __CFRunLoopDoSources0 + 269
	24  CoreFoundation                      0x000000010a2bc934 __CFRunLoopRun + 868
	25  CoreFoundation                      0x000000010a2bc366 CFRunLoopRunSpecific + 470
	26  GraphicsServices                    0x000000010e3b3a3e GSEventRunModal + 161
	27  UIKit                               0x0000000108ef48c0 UIApplicationMain + 1282
	28  Fly Dev                             0x000000010803f8e2 main + 114
	29  libdyld.dylib                       0x000000010bbf7145 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException