resolved warnings

Management/Services/CanvasService.cs

@@ -41,7 +41,7 @@ public class CanvasService : ICanvasService
 
   public async Task<CourseModel> GetCourse(ulong courseId)
   {
-    var url = $"course/{courseId}";
+    var url = $"courses/{courseId}";
     var request = new RestRequest(url);
     var (data, response) = await webRequestor.GetAsync<CourseModel>(request);
 
@@ -127,7 +127,8 @@ public class CanvasService : ICanvasService
 
     var currentTerms = terms
       .Where(t => t.EndAt != null && t.EndAt > queryDate && t.EndAt < queryDate.AddYears(1))
-      .Take(3);
+      .Take(3)
+      .OrderBy(t => t.StartAt);
 
     return currentTerms;
   }

Management/Services/WebRequestor.cs

@@ -58,7 +58,7 @@ public class WebRequestor : IWebRequestor
     }
     try
     {
-      var data = JsonSerializer.Deserialize<T>(response.Content);
+      var data = JsonSerializer.Deserialize<T>(response.Content!);
 
       if (data == null)
       {

Management/Services/YamlManager.cs

@@ -6,30 +6,35 @@ public class YamlManager
 {
   public string CourseToYaml(LocalCourse course)
   {
-    var serializer = new SerializerBuilder()
-      .Build();
+    var serializer = new SerializerBuilder().Build();
     var yaml = serializer.Serialize(course);
 
-    System.Console.WriteLine(yaml);
+    // System.Console.WriteLine(yaml);
     return yaml;
   }
 
   public LocalCourse ParseCourse(string rawCourse)
   {
-    var deserializer = new DeserializerBuilder()
-      .Build();
+    var deserializer = new DeserializerBuilder().Build();
 
     var person = deserializer.Deserialize<LocalCourse>(rawCourse);
     return person;
   }
 
-  public async Task SaveCourse(LocalCourse course)
+  public async Task SaveCourseAsync(LocalCourse course)
   {
     var courseString = CourseToYaml(course);
 
     await File.WriteAllTextAsync($"../storage/{course.Name}.yml", courseString);
   }
 
+  public void SaveCourse(LocalCourse course)
+  {
+    var courseString = CourseToYaml(course);
+
+    File.WriteAllText($"../storage/{course.Name}.yml", courseString);
+  }
+
   public async Task<IEnumerable<LocalCourse>> LoadSavedCourses()
   {
     string path = "../storage/";