Request ID: 00-40a3c1c69248678981bd98901e772cb9-2aed6ca816f01f3b-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.