fix: поправил конфиг.

Lesson8/Properties/launchSettings.json

@@ -31,6 +31,7 @@
       "applicationUrl": "https://5.75.136.104:5001;http://5.75.136.104:5000",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development"
+      }
     }
   }
 }