CPVoiceControlTemplateExample.swift

    enum VoiceControlStates: String {  
        case loading = "loading"  
        case listening = "listening"  
        case recognized = "recognized"  
    }  
      
    let vct = CPVoiceControlTemplate(voiceControlStates: [  
        CPVoiceControlState(identifier: VoiceControlStates.loading.rawValue, titleVariants: ["loading"], image: nil, repeats: true),  
        CPVoiceControlState(identifier: VoiceControlStates.listening.rawValue, titleVariants: ["listening"], image: nil, repeats: true),  
        CPVoiceControlState(identifier: VoiceControlStates.recognized.rawValue, titleVariants: ["recognized"], image: nil, repeats: true)  
    ])  
    CPBaseController.sharedInstance.interfaceController?.pushTemplate(vct, animated: true)  


Crash:

    0   CoreFoundation                    0x1e873bef8 __exceptionPreprocess + 228  
    1   libobjc.A.dylib                   0x1e7909a40 objc_exception_throw + 55  
    2   CoreFoundation                    0x1e8640ac4 +[NSException raise:format:] + 115  
    3   CarPlay                           0x2125a7944 CPAssertAllowedClasses + 159  
    4   CarPlay                           0x2125a79c4 -[CPInterfaceController pushTemplate:animated:] + 83  
    5   Flitsmeister                      0x100bfe700 closure #1 in static FMCPMapTemplate.installMapButtons(template:) + 8349440 (FMCPMapTemplate.swift:53)  
    6   Flitsmeister                      0x100c005dc thunk for @escaping @callee_guaranteed (@guaranteed CPMapButton) -> () + 8357340 (:0)  
    7   CarPlay                           0x2125a57fc -[CPMapButton handlePrimaryAction] + 91  
    8   CarPlay                           0x2125b5b8c __50-[CPMapTemplate handleActionForControlIdentifier:]_block_invoke + 687  
    9   libdispatch.dylib                 0x1e81736c8 _dispatch_call_block_and_release + 23  
    10  libdispatch.dylib                 0x1e8174484 _dispatch_client_callout + 15  
    11  libdispatch.dylib                 0x1e81209ec _dispatch_main_queue_callback_4CF$VARIANT$mp + 1067  
    12  CoreFoundation                    0x1e86ca1bc __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 11  
    13  CoreFoundation                    0x1e86c5084 __CFRunLoopRun + 1963  
    14  CoreFoundation                    0x1e86c45b8 CFRunLoopRunSpecific + 435  
    15  GraphicsServices                  0x1ea938584 GSEventRunModal + 99  
    16  UIKitCore                         0x215540bc8 UIApplicationMain + 211  
    17  Flitsmeister                      0x100424418 main + 115736 (main.m:36)  
    18  libdyld.dylib                     0x1e8184b94 start + 3  

Works !
Thanks a lot :)