Request ID: 00-b8ede7cc25f84c870787c5003bc50ec8-35dd272afcdb4c4b-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.