Request ID: 00-300ff0f12ba44f5121e62c39152900d8-f5e47c4ecbfbc425-00
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.