Trailing closure passed to parameter of type 'Int' that does not accept a closure

Which line exactly ? Is it line 3 or 4 ? If so, please show how onboardingData and OnboardingCard are defined. Otherwise tell exactly where you get the error.

1.    VStack {
2.     TabView {
3.       ForEach(onboardingData) { onboardingItem in
4.          OnboardingCard(onboardingItem: onboardingItem)
5.       }
6.   }
7.   .tabViewStyle(PageTabViewStyle(indexDisplayMode: .automatic))
8.   .indexViewStyle(PageIndexViewStyle (backgroundDisplayMode: .always))
9.   .foregroundColor(.white)
10. }

on line 2 I get error, in TabView , and  how onboardingData and OnboardingCard are defined it is defined as

OnboardingCard:

fileprivate struct OnboardingCard: View {
  let onboardingItem: OnboardingItem
    var body: some View {
      VStack {
        Image(onboardingItem.imageName)
         .resizable()
        .frame(width:340, height:340)
       
        Text(onboardingItem.title)
        .font(.title)
          .foregroundColor(.black)
        .bold()
        .padding()
        Text(onboardingItem.description)
        .multilineTextAlignment(.center)
        .font(.body)
        .foregroundColor(.gray)
        .padding (.horizontal, 15)
        }
       }
       }

onboardingData:

  var onboardingData: [OnboardingItem] = [
  OnboardingItem(imageName: "image1", title: "Welcome1", description: "description1"),
  OnboardingItem(imageName: "image2", title: "Welcome2", description: "description2"),
    OnboardingItem(imageName: "image3", title: "Welcome3", description: "description3"),
  OnboardingItem(imageName: "image4", title: "Welcome4", description: "description4")
  ]

Doc states :

Tab views only support tab items of type Text, Image, or an image followed by text. Passing any other type of view results in a visible but empty tab item.

like in

TabView {
    Text("The First Tab")
        .badge(10)
        .tabItem {
            Image(systemName: "1.square.fill")
            Text("First")
        }

That's not the case with your code: you return OnboardingCard

ForEach(onboardingData) { onboardingItem in 
    OnboardingCard(onboardingItem: onboardingItem)
}

What is the purpose of VStack for TabView ?

As OOPers and Claude mentions in comment, when we called the TabView as MyTabView problem solved

LegalAI /Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Services/DocumentService.swift /Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Services/DocumentService.swift:92:18 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Utilities/Extensions.swift /Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Utilities/Extensions.swift:235:22 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/DocumentViewModel.swift /Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/DocumentViewModel.swift:192:8 Invalid redeclaration of 'FormFieldView'

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/ConsultationViewModel.swift /Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/ConsultationViewModel.swift:54:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/CourseViewModel.swift /Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/CourseViewModel.swift:29:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/CourseViewModel.swift:73:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/CourseViewModel.swift:93:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/CourseViewModel.swift:122:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/CourseViewModel.swift:170:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/FranchiseViewModel.swift /Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/FranchiseViewModel.swift:40:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/FranchiseViewModel.swift:69:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/FranchiseViewModel.swift:98:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/FranchiseViewModel.swift:118:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/FranchiseViewModel.swift:133:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/FranchiseViewModel.swift:162:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/FranchiseViewModel.swift:191:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/LawFirmManagementViewModel.swift /Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/LawFirmManagementViewModel.swift:34:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/LawFirmManagementViewModel.swift:62:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/LawFirmManagementViewModel.swift:86:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/LawFirmManagementViewModel.swift:110:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/LawFirmManagementViewModel.swift:133:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/LawFirmManagementViewModel.swift:146:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/LawFirmManagementViewModel.swift:159:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/LawFirmManagementViewModel.swift:172:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/LawFirmManagementViewModel.swift:185:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/LawyerOfficeViewModel.swift /Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/LawyerOfficeViewModel.swift:31:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/TranslationViewModel.swift:53:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/FeedbackViewModel.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/FeedbackViewModel.swift:26:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/FeedbackViewModel.swift:44:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/CalculatorViewModel.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/CalculatorViewModel.swift:86:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/CalculatorViewModel.swift:267:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/CalculatorViewModel.swift:278:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/VIPViewModel.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/VIPViewModel.swift:29:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/VIPViewModel.swift:49:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/ViewModels/VIPViewModel.swift:83:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Lawyer/AppointmentBookingView.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Lawyer/AppointmentBookingView.swift:326:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Lawyer/LawyerDetailView.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Lawyer/LawyerDetailView.swift:458:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Lawyer/ReviewSubmissionView.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Lawyer/ReviewSubmissionView.swift:295:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/AIConsultation/NewConsultationView.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/AIConsultation/NewConsultationView.swift:169:18 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Auth/ForgotPasswordView.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Auth/ForgotPasswordView.swift:115:26 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Auth/ForgotPasswordView.swift:195:22 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Auth/LoginView.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Auth/LoginView.swift:119:26 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Auth/LoginView.swift:219:22 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Auth/LoginView.swift:257:30 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Auth/RegisterView.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Auth/RegisterView.swift:119:26 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Auth/RegisterView.swift:176:18 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Contract/ContractReviewView.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Contract/ContractReviewView.swift:184:22 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Contract/ContractUploadSheet.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Contract/ContractUploadSheet.swift:99:22 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Contract/ContractUploadSheet.swift:196:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Document/DocumentCategoriesView.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Document/DocumentCategoriesView.swift:25:25 The compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Document/DocumentFormView.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Document/DocumentFormView.swift:140:14 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Document/DocumentFormViewEnhanced.swift

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Document/DocumentFormViewEnhanced.swift:106:18 Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Document/DocumentFormViewEnhanced.swift:117:20 Referencing subscript 'subscript(dynamicMember:)' requires wrapper 'ObservedObject<DocumentViewModel>.Wrapper'

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Document/DocumentFormViewEnhanced.swift:117:30 Value of type 'DocumentViewModel' has no dynamic member 'isGenerating' using key path from root type 'DocumentViewModel'

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Document/DocumentFormViewEnhanced.swift:117:30 Cannot convert value of type 'Binding<_>' to expected condition type 'Bool'

/Users/macbook/Documents/develop/2025-12-20/LegalAI_Native/LegalAI_app/Views/Document/DocumentFormViewEnhanced.swift:129:17 Referencing subscript 'subscript(dynamicMember:)' requires wrapper 'ObservedObject<DocumentViewModel>.Wrapper'

on my app i was saw same problme , its errors "Trailing closure passed to parameter of type 'any Decoder' that does not accept a closure" , i was change to swifit language change to verion 6.0 , but same errors , how to fix it

import SwiftUI

struct DocumentTemplatesView: View { @StateObject private var documentService = DocumentService.shared @State private var selectedCategory: DocumentCategory? @State private var selectedTemplate: DocumentTemplate? @State private var searchText = ""

var body: some View {
    NavigationView {
        VStack(spacing: 0) {
            // Search Bar
            HStack {
                Image(systemName: "magnifyingglass")
                    .foregroundColor(.secondary)
                
                TextField("搜索模板", text: $searchText)
                
                if !searchText.isEmpty {
                    Button(action: { searchText = "" }) {
                        Image(systemName: "xmark.circle.fill")
                            .foregroundColor(.secondary)
                    }
                }
            }
            .padding()
            .background(Color(.systemBackground))
            
            // Templates List
            if documentService.isLoading && documentService.categories.isEmpty {
                ProgressView("加载中...")
                    .frame(maxWidth: .infinity, maxHeight: .infinity)
            } else if documentService.categories.isEmpty {
                VStack(spacing: 20) {
                    Image(systemName: "doc.text")
                        .font(.system(size: 60))
                        .foregroundColor(.gray)
                    Text("暂无文书模板")
                        .font(.headline)
                        .foregroundColor(.gray)
                    Button("重新加载") {
                        Task { @MainActor in
                            try? await documentService.fetchCategories()
                        }
                    }
                    .buttonStyle(.bordered)
                }
                .frame(maxWidth: .infinity, maxHeight: .infinity)
            } else {
                ScrollView {
                    LazyVStack(spacing: 16) {
                        ForEach(filteredCategories) { category in
                            CategorySection(category: category, searchText: searchText) { template in
                                selectedTemplate = template
                            }
                        }
                    }
                    .padding()
                }
            }
        }
        .navigationTitle("文书模板")
        .sheet(item: $selectedTemplate) { template in
            if let category = documentService.categories.first(where: { $0.templates.contains(where: { $0.id == template.id }) }) {
                DocumentFormView(template: template, categoryType: category.id)
            }
        }
        .task {
            if documentService.categories.isEmpty {
                _ = try? await documentService.fetchCategories()
            }
        }
    }
}

private var filteredCategories: [DocumentCategory] {
    if searchText.isEmpty {
        return documentService.categories
    }
    
    return documentService.categories.compactMap { category in
        let filteredTemplates = category.templates.filter { template in
            template.name.localizedCaseInsensitiveContains(searchText) ||
            template.desc.localizedCaseInsensitiveContains(searchText)
        }
        
        if filteredTemplates.isEmpty {
            return nil
        }
        
        return DocumentCategory(
            id: category.id,
            name: category.name,
            icon: category.icon,
            description: category.description,
            templates: filteredTemplates
        )
    }
}

}

// MARK: - Category Section struct CategorySection: View { let category: DocumentCategory let searchText: String let onTemplateSelect: (DocumentTemplate) -> Void

var body: some View {
    VStack(alignment: .leading, spacing: 12) {
        // Category Header
        HStack {
            Image(systemName: iconName(for: category.icon))
                .font(.title2)
                .foregroundColor(.blue)
            
            VStack(alignment: .leading, spacing: 4) {
                Text(category.name)
                    .font(.headline)
                Text(category.description)
                    .font(.caption)
                    .foregroundColor(.secondary)
            }
            
            Spacer()
            
            Text("\(category.templates.count)个")
                .font(.caption)
                .foregroundColor(.secondary)
        }
        .padding()
        .background(Color(.systemBackground))
        .cornerRadius(12)
        
        // Templates
        ForEach(category.templates) { template in
            Button(action: { onTemplateSelect(template) }) {
                HStack {
                    VStack(alignment: .leading, spacing: 4) {
                        Text(template.name)
                            .font(.subheadline)
                            .foregroundColor(.primary)
                        Text(template.desc)
                            .font(.caption)
                            .foregroundColor(.secondary)
                            .lineLimit(2)
                    }
                    Spacer()
                    Image(systemName: "chevron.right")
                        .font(.caption)
                        .foregroundColor(.gray)
                }
                .padding()
                .background(Color(.secondarySystemBackground))
                .cornerRadius(8)
            }
        }
    }
}

private func iconName(for icon: String) -> String {
    switch icon {
    case "gavel": return "gavel.fill"
    case "file-signature": return "doc.text.fill"
    case "building": return "building.2.fill"
    case "shield-check": return "checkmark.shield.fill"
    case "balance-scale": return "scale.3d"
    case "heart": return "heart.fill"
    case "globe": return "globe"
    case "lightbulb": return "lightbulb.fill"
    case "briefcase": return "briefcase.fill"
    case "house": return "house.fill"
    default: return "doc.text"
    }
}

}

#Preview { DocumentTemplatesView() }