Request ID: 00-dc11d069807e1cdee7a858c268f7dcc6-7c5b9d1455b85c83-00
A second operation was started on this context instance before a previous operation completed. This is usually caused by different threads concurrently using the same instance of DbContext. For more information on how to avoid threading issues with DbContext, see https://go.microsoft.com/fwlink/?linkid=2097913.