The local database is damaged.

The local database might be damaged when the platform crashed or the PC was shut down incorrectly. It is recommended to recover the data, you can select the preferred date of the backup. Clearing the data may be chosen when recovery didn't help or if you don't need saved statistics. 

1. Select the backup date.

2. Clear all data.

3. Close the platform.

To find out the reason for the data corruption and prevent the error in future, please send the archive to our support.