Urbackup Server crashing every night

Hello my Urbackup Server is crashing every night.
Anyone has some ideas where the problem is?

The log says

2021-08-05 10:51:30: WARNING: SQLite: no such table: directory_links in "DELETE FROM directory_links WHERE clientid=? AND target=?" errorcode: 1

2021-08-05 10:51:30: ERROR: Error preparing Query [DELETE FROM directory_links WHERE clientid=? AND target=?]: no such table: directory_links
2021-08-05 10:51:30: ERROR: Fatal exception code 3221225477 at address 0x00007FFAC4520132
2021-08-05 10:51:30: ERROR: Fatal exception (APPLICATION CRASHED). Crash dump written to “C:\Windows\TEMP\UrBackup\v2.0.0-20210805-105130-8916-8684.dmp”
2021-08-05 10:51:30: ERROR: Program abort (SIGABRT)

Seems it only happens when I try to start Backups

It seems like the database is broken or missing a table? Do you have a backup of the urbackup sqlite database you can restore from before it started crashing?