Request ID: 00-cc43a2eec647419f086c36eeb2c7c3bf-66c78a21cf547e07-00
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.