Request ID: 00-573adf9715319c81eaf293621bb092b1-4b601d2e02e56b3a-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.