I get this error when deleting from CoreData" Thread 1: "*** -[__NSArray0 objectAtIndex:]: index 0 beyond bounds for empty NSArray"

 ScrollView{
            LazyVGrid(columns: gridItemLayot,spacing: 2){
                ForEach(items.indices){ index in
                    NavigationLink(destination: ImageView(del: items[index])){
                        ZStack(alignment: .topTrailing){
                            Image(uiImage: UIImage(data: items[index].post_pic!)!)
                                .resizable()
                                .frame(width: 120, height: 120)
                                .font(.system(size: 30))
                                .cornerRadius(5)
                                .padding(.bottom,7)
                            if isEditing == true{
                                Button(action:{
                                    removePost(offsets: [index])
                                    // vm.refresh()
                                }){
                                    Text("⛔️")
                                }.buttonStyle(PlainButtonStyle())
                                .offset(x:5,y:-5)

                            }
                        }
                    }
                }
            }

        }.onAppear(perform: {vm.refresh()})

    private func removePost( offsets: IndexSet) {
        withAnimation {
            offsets.map { items[$0] }.forEach(vm.viewContext.delete)
            do {
                try vm.viewContext.save()
            } catch {
                let nsError = error as NSError
                fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
            }
        }
    }

This function workes when I delete from List

Don't use indices with a ForEach if your data is dynamic. That form of ForEach only reads the data once and doesn't update it as you add/delete items. So, in your case, ForEach reads that you have an array with (for example) 8 item when you first initialize it but then if you delete one so that you have 7 items it will still think you have 8 items and you will run into issues.

If your data is dynamic, you need to use a ForEach that identifies them either because the items conform to Identifiable or because you supply an explicit id parameter.

Thank you, but how can I pass the current IndexSet to the function removePost(offsets: IndexSet)

        ScrollView{
                    LazyVGrid(columns: gridItemLayot,spacing: 2){
                        ForEach(items){ item in
                            NavigationLink(destination: ImageView(item: item)){
                                ZStack(alignment: .topTrailing){
                                Image(uiImage: UIImage(data: item.post_pic!)!)
                                    .resizable()
                                    .frame(width: 120, height: 120)
                                    .font(.system(size: 30))
                                    .cornerRadius(5)
                                    .padding(.bottom,7)
                                    Button(action:{

                                        removePost(offsets: [...])
                                    }){
                                        Text("⛔️")
                                    }
                                }
                            }
                        }
                    }

                }.onAppear(perform: {vm.refresh()})

Yes, I passed the item itself and it workes now, Thank you

 removePost(item: item)

    private func removePost(item: Post) {
        withAnimation {
            vm.viewContext.delete(item)

            do {
                try vm.viewContext.save()
            } catch {
                let nsError = error as NSError
                fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
            }
        }
    }