ios - Xcode error - Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: -


this question has answer here:

i dont know can problem:/

2014-04-11 22:36:33.815 bus[1432:60b] *** terminating app due uncaught exception 'nsunknownkeyexception', reason: '[<tableviewcell 0x8e63160> setvalue:forundefinedkey:]: class not key value coding-compliant key descriptionlablel.' *** first throw call stack: (     0   corefoundation                      0x017ee1e4 __exceptionpreprocess + 180     1   libobjc.a.dylib                     0x0156d8e5 objc_exception_throw + 44     2   corefoundation                      0x0187dfe1 -[nsexception raise] + 17     3   foundation                          0x0122dd9e -[nsobject(nskeyvaluecoding) setvalue:forundefinedkey:] + 282     4   foundation                          0x0119a1d7 _nssetusingkeyvaluesetter + 88     5   foundation                          0x01199731 -[nsobject(nskeyvaluecoding) setvalue:forkey:] + 267     6   uikit                               0x0029c508 -[uiview(calayerdelegate) setvalue:forkey:] + 168     7   foundation                          0x011fbb0a -[nsobject(nskeyvaluecoding) setvalue:forkeypath:] + 412     8   uikit                               0x004e41f4 -[uiruntimeoutletconnection connect] + 106     9   libobjc.a.dylib                     0x0157f7de -[nsobject performselector:] + 62     10  corefoundation                      0x017e976a -[nsarray makeobjectsperformselector:] + 314     11  uikit                               0x004e2d4d -[uinib instantiatewithowner:options:] + 1417     12  uikit                               0x00319db0 -[uitableview _dequeuereusableviewoftype:withidentifier:] + 370     13  uikit                               0x0031a089 -[uitableview dequeuereusablecellwithidentifier:] + 48     14  uikit                               0x0031a0b9 -[uitableview dequeuereusablecellwithidentifier:forindexpath:] + 43     15  bus                                 0x000034bf -[tableviewcontroller tableview:cellforrowatindexpath:] + 127     16  uikit                               0x0032611f -[uitableview _createpreparedcellforglobalrow:withindexpath:] + 412     17  uikit                               0x003261f3 -[uitableview _createpreparedcellforglobalrow:] + 69     18  uikit                               0x00307ece -[uitableview _updatevisiblecellsnow:] + 2428     19  uikit                               0x0031c6a5 -[uitableview layoutsubviews] + 213     20  uikit                               0x0029c964 -[uiview(calayerdelegate) layoutsublayersoflayer:] + 355     21  libobjc.a.dylib                     0x0157f82b -[nsobject performselector:withobject:] + 70     22  quartzcore                          0x03c5945a -[calayer layoutsublayers] + 148     23  quartzcore                          0x03c4d244 _zn2ca5layer16layout_if_neededepns_11transactione + 380     24  quartzcore                          0x03c593a5 -[calayer layoutifneeded] + 160     25  uikit                               0x0035eae3 -[uiviewcontroller window:setupwithinterfaceorientation:] + 304     26  uikit                               0x00274aa7 -[uiwindow _setrotatableclient:toorientation:updatestatusbar:duration:force:isrotating:] + 5212     27  uikit                               0x00273646 -[uiwindow _setrotatableclient:toorientation:updatestatusbar:duration:force:] + 82     28  uikit                               0x00273518 -[uiwindow _setrotatablevieworientation:updatestatusbar:duration:force:] + 117     29  uikit                               0x002735a0 -[uiwindow _setrotatablevieworientation:duration:force:] + 67     30  uikit                               0x0027263a __57-[uiwindow _updatetointerfaceorientation:duration:force:]_block_invoke + 120     31  uikit                               0x0027259c -[uiwindow _updatetointerfaceorientation:duration:force:] + 400     32  uikit                               0x002732f3 -[uiwindow setautorotates:forceupdateinterfaceorientation:] + 870     33  uikit                               0x002768e6 -[uiwindow setdelegate:] + 449     34  uikit                               0x00350b77 -[uiviewcontroller _trybecomerootviewcontrollerinwindow:] + 180     35  uikit                               0x0026c474 -[uiwindow addrootviewcontrollerviewifpossible] + 591     36  uikit                               0x0026c5ef -[uiwindow _sethidden:forced:] + 312     37  uikit                               0x0026c86b -[uiwindow _orderfrontwithoutmakingkey] + 49     38  uikit                               0x002773c8 -[uiwindow makekeyandvisible] + 65     39  uikit                               0x00227bc0 -[uiapplication _callinitializationdelegatesforurl:payload:suspended:] + 2097     40  uikit                               0x0022c667 -[uiapplication _runwithurl:payload:launchorientation:statusbarstyle:statusbarhidden:] + 824     41  uikit                               0x00240f92 -[uiapplication handleevent:withnewevent:] + 3517     42  uikit                               0x00241555 -[uiapplication sendevent:] + 85     43  uikit                               0x0022e250 _uiapplicationhandleevent + 683     44  graphicsservices                    0x037e3f02 _purpleeventcallback + 776     45  graphicsservices                    0x037e3a0d purpleeventcallback + 46     46  corefoundation                      0x01769ca5 __cfrunloop_is_calling_out_to_a_source1_perform_function__ + 53     47  corefoundation                      0x017699db __cfrunloopdosource1 + 523     48  corefoundation                      0x0179468c __cfrunlooprun + 2156     49  corefoundation                      0x017939d3 cfrunlooprunspecific + 467     50  corefoundation                      0x017937eb cfrunloopruninmode + 123     51  uikit                               0x0022bd9c -[uiapplication _run] + 840     52  uikit                               0x0022df9b uiapplicationmain + 1225     53  bus                                 0x00003a4d main + 141     54  libdyld.dylib                       0x01e35701 start + 1 ) libc++abi.dylib: terminating uncaught exception of type nsexception (lldb)

it means in nib file have outlet called descriptionlablel, don't have property in code. "label" misspelled, problem.


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