fix: handle error on loading view (#154)

Author: thisisabhash

Diff for: Sources/FaceLiveness/Views/Liveness/FaceLivenessDetectionView.swift

@@ -82,8 +82,6 @@ public struct FaceLivenessDetectorView: View {
                 isPreviewScreenEnabled: !disableStartView
             )
         )
-        
-        faceDetector.setFaceDetectionSessionConfigurationWrapper(configuration: viewModel)
     }
 
     init(
@@ -142,6 +140,23 @@ public struct FaceLivenessDetectorView: View {
                     } catch {
                         throw FaceLivenessDetectionError.accessDenied
                     }
+                    
+                    DispatchQueue.main.async {
+                        if let faceDetector = viewModel.faceDetector as? FaceDetectorShortRange.Model {
+                            faceDetector.setFaceDetectionSessionConfigurationWrapper(configuration: viewModel)
+                        }
+                    }
+                }
+            }
+            .onReceive(viewModel.$livenessState) { output in
+                switch output.state {
+                case .encounteredUnrecoverableError(let error):
+                    let closeCode = error.webSocketCloseCode ?? .normalClosure
+                    viewModel.livenessService?.closeSocket(with: closeCode)
+                    isPresented = false
+                    onCompletion(.failure(mapError(error)))
+                default:
+                    break
                 }
             }
         case .awaitingLivenessSession(let challenge):