Request ID: 00-a6f5ae77685500855625066d42c3bb07-19177eeb1f771f5d-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.