Consola Xcode que dice que Firebase no está configurado

No sé por qué esto no funciona, mi Firebase está configurada. Aquí hay unCaptura de pantalla de mi archivo AppDelegate.swift. Aquí está mi registro de consola:

2017-05-29 17:52:53.141 Study M8[31592] <Error> [Firebase/Core][I-COR000003] The default Firebase app has not yet been configured. Add [FIRApp configure] to your application initialization. Read more: https://firebase.google.com/docs/ios/setup#initialize_firebase_in_your_app.
2017-05-29 17:52:53.184 Study M8[31592:1051241] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'The default FIRApp instance must be configured before the default FIRAuthinstance can be initialized. One way to ensure that is to call `[FIRApp configure];` is called in `application:didFinishLaunchingWithOptions:`.'
*** First throw call stack:
(
    0   CoreFoundation                      0x000000010a445b0b __exceptionPreprocess + 171
    1   libobjc.A.dylib                     0x0000000109eaa141 objc_exception_throw + 48
    2   CoreFoundation                      0x000000010a4ae625 +[NSException raise:format:] + 197
    3   Study M8                            0x0000000108550a84 +[FIRAuth auth] + 88
    4   Study M8                            0x00000001084e7a77 _TFC8Study_M810MessagesVCcfT5coderCSo7NSCoder_GSqS0__ + 279
    5   Study M8                            0x00000001084e7bcd _TToFC8Study_M810MessagesVCcfT5coderCSo7NSCoder_GSqS0__ + 45
    6   UIKit                               0x000000010ac70f54 -[UIClassSwapper initWithCoder:] + 246
    7   UIKit                               0x000000010ae614af UINibDecoderDecodeObjectForValue + 693
    8   UIKit                               0x000000010ae6164d UINibDecoderDecodeObjectForValue + 1107
    9   UIKit                               0x000000010ae611ef -[UINibDecoder decodeObjectForKey:] + 89
    10  UIKit                               0x000000010aa07267 -[UIViewController initWithCoder:] + 1421
    11  UIKit                               0x000000010aa5cee5 -[UITabBarController initWithCoder:] + 65
    12  UIKit                               0x000000010ae614af UINibDecoderDecodeObjectForValue + 693
    13  UIKit                               0x000000010ae611ef -[UINibDecoder decodeObjectForKey:] + 89
    14  UIKit                               0x000000010ac70c20 -[UIRuntimeConnection initWithCoder:] + 178
    15  UIKit                               0x000000010ae614af UINibDecoderDecodeObjectForValue + 693
    16  UIKit                               0x000000010ae6164d UINibDecoderDecodeObjectForValue + 1107
    17  UIKit                               0x000000010ae611ef -[UINibDecoder decodeObjectForKey:] + 89
    18  UIKit                               0x000000010ac6fe1d -[UINib instantiateWithOwner:options:] + 1262
    19  UIKit                               0x000000010b02882f -[UIStoryboard instantiateViewControllerWithIdentifier:] + 181
    20  UIKit                               0x000000010a8688d1 -[UIApplication _loadMainStoryboardFileNamed:bundle:] + 108
    21  UIKit                               0x000000010a868db3 -[UIApplication _loadMainInterfaceFile] + 260
    22  UIKit                               0x000000010a867456 -[UIApplication _runWithMainScene:transitionContext:completion:] + 1407
    23  UIKit                               0x000000010a864793 -[UIApplication workspaceDidEndTransaction:] + 182
    24  FrontBoardServices                  0x000000010d3205f6 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 24
    25  FrontBoardServices                  0x000000010d32046d -[FBSSerialQueue _performNext] + 186
    26  FrontBoardServices                  0x000000010d3207f6 -[FBSSerialQueue _performNextFromRunLoopSource] + 45
    27  CoreFoundation                      0x000000010a3ebc01 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
    28  CoreFoundation                      0x000000010a3d10cf __CFRunLoopDoSources0 + 527
    29  CoreFoundation                      0x000000010a3d05ff __CFRunLoopRun + 911
    30  CoreFoundation                      0x000000010a3d0016 CFRunLoopRunSpecific + 406
    31  UIKit                               0x000000010a86302f -[UIApplication _run] + 468
    32  UIKit                               0x000000010a8690d4 UIApplicationMain + 159
    33  Study M8                            0x00000001084e8997 main + 55
    34  libdyld.dylib                       0x000000010ca5665d start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)

Si alguien tiene alguna idea de qué hacer, por favor ayuda.