Request ID: 00-3ec1d5e9e27098e8b8f40dd6b7a22b55-f74d42f8cc4b4a21-00
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.