I wanted to retrieve data and link that I put in a nested inside Firebase but I receive an error:

System.Collections.Generic.Dictionary`2[System.String,System.Object][]

I hope there's anyone who can help me solve this issue.

Here is the firebase nested looks like

Here is the code

private IEnumerator LoadCourse_1()
{
    //Get the currently logged in user data
    var DBTask = DBreference.Child("Course").Child("MDR3005").GetValueAsync();
   
    yield return new WaitUntil(predicate: () => DBTask.IsCompleted);

    if (DBTask.Exception != null)
    {
        Debug.LogWarning(message: $"Failed to register task with {DBTask.Exception}");
        
    }
    else if (DBTask.Result.Value == null)
    {
        //No data exists yet
        Course1.text = "-";
        Course1CodeName.text = "-";
    }
    else
    {
        //Data has been retrieved at dashboard
        DataSnapshot snapshot = DBTask.Result;
        Course1.text = snapshot.Child("CourseCode").Value.ToString() + ": " + snapshot.Child("CourseName").Value.ToString() ;
       
       
        //Data retrieve for course data
        Course1CodeName.text = snapshot.Child("CourseCode").Value.ToString() + "\n" + snapshot.Child("CourseName").Value.ToString();
        
        TM1.text = snapshot.Child("Notes").Value.ToString();
        
       

    }
}