Request ID: 00-b3801fd3202df2938e08cd6d4fe6e91a-f69831d9b88cf046-00
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.