ios – Dictionary causes bizarre errors swift/swiftui

I’ve a dictionary outlined as the next

@State var instructorNamesDictionary: [String: [String]] = [:]

Content material is added to the dictionary in a .activity later

    for course in programs{
         var updatedinstructors: [InstructorModel] = []
         for instructorID in course.instructors {
                let teacher = attempt await getInstructor(uid: instructorID)
                updatedinstructors.append(contentsOf: teacher)
                                    
                for names in updatedinstructors{
                                        
                  instructorNamesDictionary[instructorID] = [names.name]
                 }
           }                
                     
                                
 }

Afterwards I attempt to use this dictionary right into a struct known as CourseCard that takes in some parameters:

struct CoursesCard: View {
    var title: String
    var picture: Picture
    var youtubeLinks: [String]
    var description: String
    var instructors: [String]
    var labels: [String]
    var isFree: Bool
    var ispro: Bool

//remainder of design code

}

Now after I do a ForEach loop on one other array by means of

ForEach(basicCourses){course in
  let picture = photographs[course.image_ref] ?? Picture("noImage")
                                   
CoursesCard(title: course.Title, picture: picture, youtubeLinks: course.youtube_videos, description: course.Description, instructors: instructorNamesDictionary[
     ForEach(course.instructors){instruc in
     instruc}] ?? ["No instructor"], labels: course.labels, isFree: course.isfree, ispro: isPro)

This offers me “Can’t convert worth ‘basicCourses’ of kind ‘[CourseModel]’ to anticipated kind ‘Binding<[CourseModel]>’, use wrapper as an alternative”

Nevertheless if I go one other array, no error is given.

Right here is CourseModel and InstructorModel if wanted:

struct CourseModel: Decodable,Identifiable {
    let id: String
    let Title: String
    let Description: String
    let image_ref: String
    let youtube_videos: [String]
    let labels: [String]
    let instructors: [String]
    let isfree: Bool
    enum CodingKeys: String, CodingKey {
        case id
        case Title
        case Description
        case image_ref
        case youtube_videos
        case labels
        case instructors
        case isfree
    }
    
}


struct InstructorModel: Decodable,Identifiable {
    let id: String
    let title: String
    
    enum CodingKeys: String, CodingKey {
        case id
        case title
    }
}

I attempted to vary the ForEach loop into

ForEach($basicCourses){$course in
  let picture = photographs[course.image_ref] ?? Picture("noImage")
                                   
CoursesCard(title: course.Title, picture: picture, youtubeLinks: course.youtube_videos, description: course.Description, instructors: instructorNamesDictionary[
     ForEach(course.instructors){instruc in
     instruc}] ?? ["No instructor"], labels: course.labels, isFree: course.isfree, ispro: isPro)

however that simply throws out different errors.