Fix Interval

API/Api.cs

@@ -1,5 +1,6 @@
 using System.Reflection;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection.Extensions;
 using Microsoft.OpenApi;
 using SQLiteEF;
 
@@ -49,7 +50,8 @@ public class Api
         app.UseAuthorization();
         
         app.MapControllers();
-        
+
+        _tracker = app.Services.GetRequiredService<Tracker>();
         app.Services.CreateScope().ServiceProvider.GetRequiredService<Context>().Database.Migrate();
 
         app.Run();