Hello there,
Do you find any Event ID triggered when the Dashboard crashes?
Use these procedures to troubleshoot computer backups in Windows Server Essentials, including backup configuration issues, incomplete or unsuccessful backups, backup health alerts, and issues with file, folder, or full-system restores. https://learn.microsoft.com/en-us/windows-server-essentials/support/troubleshoot-computer-backup-and-restore-errors-in-windows-server-essentials
The below thread discusses the same issue and you can try out some troubleshooting steps from this and see if that helps you to sort the Issue. https://learn.microsoft.com/en-us/answers/questions/571825/dashboard-on-wse-2012-r2-crashes-want-to-do-backup.html
https://social.technet.microsoft.com/Forums/systemcenter/en-US/d53ff40b-5217-4332-ad3e-952801784a5b/errorbackup-services-not-running-but-they-are?forum=windowsbackup
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