Request ID: 00-3b72dd85912039f4a03a8af55aefa2a4-9b5a8c58e382d437-00
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.