No ObservableObject found

Here is the full error:

`Fatal error: No ObservableObject of type LocationsViewModel found. A View.environmentObject(_:) for LocationsViewModel may be missing as an ancestor of this view.`

I am essentially creating an app. The user can login/register. Once the user logs in they see a map view (MapKit). Here is just the main code (excluding the login/register parts). Any idea what i am doing wrong?

// MARK: MAP SCREEN
struct UserScreen: View {
  @Binding var sucessLogin : Bool
  @StateObject private var vm = LocationsViewModel()

   
  var body: some View{
    ZStack{
      Map(coordinateRegion: $vm.mapRegion)
        .ignoresSafeArea()
       
      VStack(spacing: 0){
        VStack{
          Button(action: vm.toggleLocationsList){
            Text(vm.mapLocation.name + ", " + vm.mapLocation.cityName)
              .font(.title2)
              .fontWeight(.black)
              .foregroundColor(.white)
              .frame(height: 55)
              .frame(maxWidth: .infinity)
              .background(Color("Theme"))
              .overlay(alignment: .leading){
                Image(systemName: "arrow.down")
                  .font(.headline)
                  .foregroundColor(.white)
                  .padding()
              }
          }
          if vm.showLocationsList{
            LocationsListView()
          }
        }
        .background(.thickMaterial)
        .cornerRadius(10)
        .shadow(color: Color.black.opacity(0.3), radius: 20, x: 0, y: 15)
        .padding()
        Spacer()
      }
    }
    .navigationTitle("")
    .navigationBarHidden(true)
    .navigationBarBackButtonHidden(true)
  }
}

I then have a LocationsViewModel which is in a different SwiftUI View file because I have a custom dropdown menu, here is the code:

// MARK: MAP Screen ViewModel
class LocationsViewModel: ObservableObject{
  @Published var locations: [Location]
  @Published var mapLocation: Location{
    didSet{
      updateMapRegion(location: mapLocation)
    }
  }
   
  //Show current region on map
  @Published var mapRegion: MKCoordinateRegion = MKCoordinateRegion()
  let mapSpan = MKCoordinateSpan(latitudeDelta: 0.1, longitudeDelta: 0.1)
   
  // Show list of locations
  @Published var showLocationsList: Bool = false
   
  init(){
    let locations = LocationsDataService.locations
    self.locations = locations
    self.mapLocation = locations.first!
    self.updateMapRegion(location: locations.first!)
  }
   
  private func updateMapRegion(location: Location){
    withAnimation(.easeInOut){
      mapRegion = MKCoordinateRegion(
        center: location.coordinates,
        span: mapSpan)
    }
  }
   
  func toggleLocationsList(){
    withAnimation(.easeInOut){
      showLocationsList.toggle()
    }
  }
}

Not sure what the error means and how I can fix it, because in my ViewModel i have it extended to Observable Object.

If you would like I can also provide a GitHub link to my project.