Request ID: 00-f3fb9a86c953d9e0bcf8c6ea3c0bbea0-0b1c17d0ec015f84-00
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.