TemplateService. !!!Ошибка записи в БД

PARR.EsppTemplateSyncWorker/Worker.cs

@@ -5,30 +5,30 @@ namespace PARR.EsppTemplateSyncWorker
     public class Worker : BackgroundService
     {
         private readonly ILogger<Worker> _logger;
-        private readonly ITemplateSyncer templateSyncer;
+        private ITemplateSyncer? templateSyncer;
+        private readonly IServiceProvider serviceProvider;
 
-        public Worker(ILogger<Worker> logger, ITemplateSyncer templateSyncer)
+        public Worker(
+            ILogger<Worker> logger,
+            IServiceProvider serviceProvider
+            )
         {
             _logger = logger;
-            this.templateSyncer = templateSyncer;
+            this.serviceProvider = serviceProvider;
         }
 
         protected override async Task ExecuteAsync(CancellationToken stoppingToken)
         {
+            using var scope = serviceProvider.CreateScope();
+            var services = scope.ServiceProvider;
+            templateSyncer = services.GetService<ITemplateSyncer>();
 
-            await templateSyncer.StartAsync();
-
-
-            //while (!stoppingToken.IsCancellationRequested)
-            //{
-            //    _logger.LogInformation("Worker running at: {time}", DateTimeOffset.Now);
-            //    await Task.Delay(1 * 1000, stoppingToken);
-            //}
+            if (templateSyncer != null) await templateSyncer.StartAsync();
         }
 
         public override Task StopAsync(CancellationToken cancellationToken)
         {
-            templateSyncer.Stop();
+            templateSyncer?.Stop();
 
             return base.StopAsync(cancellationToken);
         }