Request ID: 00-18f3e239c07a7f7d5c3bad4b9d76f06a-99c50674050c8683-00
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.