Request ID: 00-d2478f1e97f1aa819638c7697d5f8334-3e2cf2914bc4d1d2-00
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.