Request ID: 00-2bff672ab1a6296780880d9ed9f6ff43-d7fc3cac07df8d56-00
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.