Request ID: 00-d4f07b9341970953172847ce69a4771c-283c34ad4fe041b0-00
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.