xcode - i did not understand what is this error -


2015-06-03 17:16:15.705 psm-inpatient[10744:799454] *** terminating app due uncaught exception 'nsunknownkeyexception', reason: '[<psm_inpatient.docloginviewcontroller 0x7fbf3bc75990> setvalue:forundefinedkey:]: class not key value coding-compliant key docpassword.' *** first throw call stack: (     0   corefoundation                      0x0000000105b37f35 __exceptionpreprocess + 165     1   libobjc.a.dylib                     0x000000010767bbb7 objc_exception_throw + 45     2   corefoundation                      0x0000000105b37b79 -[nsexception raise] + 9     3   foundation                          0x0000000105f4f7b3 -[nsobject(nskeyvaluecoding) setvalue:forkey:] + 259     4   corefoundation                      0x0000000105a81e80 -[nsarray makeobjectsperformselector:] + 224     5   uikit                               0x0000000106688c7d -[uinib instantiatewithowner:options:] + 1506     6   uikit                               0x00000001064e7f98 -[uiviewcontroller _loadviewfromnibnamed:bundle:] + 242     7   uikit                               0x00000001064e8588 -[uiviewcontroller loadview] + 109     8   uikit                               0x00000001064e87f9 -[uiviewcontroller loadviewifrequired] + 75     9   uikit                               0x00000001064e8c8e -[uiviewcontroller view] + 27     10  uikit                               0x0000000106a8a41e -[_uifullscreenpresentationcontroller _setpresentedviewcontroller:] + 65     11  uikit                               0x00000001064c4429 -[uipresentationcontroller initwithpresentedviewcontroller:presentingviewcontroller:] + 105     12  uikit                               0x00000001064f4a41 -[uiviewcontroller _presentviewcontroller:withanimationcontroller:completion:] + 1746     13  uikit                               0x00000001064f6d81 __62-[uiviewcontroller presentviewcontroller:animated:completion:]_block_invoke + 132     14  uikit                               0x00000001064f6ca5 -[uiviewcontroller presentviewcontroller:animated:completion:] + 229     15  uikit                               0x00000001063c48be -[uiapplication sendaction:to:from:forevent:] + 75     16  uikit                               0x00000001064cb410 -[uicontrol _sendactionsforevents:withevent:] + 467     17  uikit                               0x00000001064ca7df -[uicontrol touchesended:withevent:] + 522     18  uikit                               0x000000010640a308 -[uiwindow _sendtouchesforevent:] + 735     19  uikit                               0x000000010640ac33 -[uiwindow sendevent:] + 683     20  uikit                               0x00000001063d79b1 -[uiapplication sendevent:] + 246     21  uikit                               0x00000001063e4a7d _uiapplicationhandleeventfromqueueevent + 17370     22  uikit                               0x00000001063c0103 _uiapplicationhandleeventqueue + 1961     23  corefoundation                      0x0000000105a6d551 __cfrunloop_is_calling_out_to_a_source0_perform_function__ + 17     24  corefoundation                      0x0000000105a6341d __cfrunloopdosources0 + 269     25  corefoundation                      0x0000000105a62a54 __cfrunlooprun + 868     26  corefoundation                      0x0000000105a62486 cfrunlooprunspecific + 470     27  graphicsservices                    0x0000000109c2e9f0 gseventrunmodal + 161     28  uikit                               0x00000001063c3420 uiapplicationmain + 1282     29  psm-inpatient                       0x00000001055a33de top_level_code + 78     30  psm-inpatient                       0x00000001055a341a main + 42     31  libdyld.dylib                       0x0000000107e55145 start + 1 ) libc++abi.dylib: terminating uncaught exception of type nsexception 

your error terminating app due uncaught exception 'nsunknownkeyexception', reason: '[ setvalue:forundefinedkey:]: class not key value coding-compliant key docpassword.

usually means .xib file (or storyboard) viewcontroller contains outlet (docpassword in case) isn't in code. should either add property in code or remove outlet entirely in interface builder.


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