"urbackupsrv cleanup --amount x" and "urbackupsrv remove-unknown" gives error

I trying to use commands “urbackupsrv cleanup --amount x” and “urbackupsrv remove-unknown” and get errors
I try it on clean installation and its same.
Ubuntu 16.04, UrBackup Server 2.1.18

root@vmi99798:/var/urbackup# urbackupsrv cleanup --amount 0%
2017-02-22 07:29:20: Shutting down all database instances...
2017-02-22 07:29:20: Opening urbackup server database...
2017-02-22 07:29:20: Deleting database journal...
2017-02-22 07:29:20: Copying/reflinking database...
2017-02-22 07:29:20: Reflink ioctl failed. errno=95
2017-02-22 07:29:20: Reflinking failed. Falling back to copying...
2017-02-22 07:29:20: WARNING: Creating file entry index. This might take a while...
2017-02-22 07:29:20: Getting number of files...
2017-02-22 07:29:20: WARNING: SQLite: no such table: files errorcode: 1
2017-02-22 07:29:20: ERROR: Error preparing Query [SELECT COUNT(*) AS c FROM files]: no such table: files. Retrying in 1s...
2017-02-22 07:29:21: WARNING: SQLite: no such table: files errorcode: 1
2017-02-22 07:29:21: ERROR: Error preparing Query [SELECT COUNT(*) AS c FROM files]: no such table: files. Retrying in 1s...
2017-02-22 07:29:22: WARNING: SQLite: no such table: files errorcode: 1
2017-02-22 07:29:22: ERROR: Error preparing Query [SELECT COUNT(*) AS c FROM files]: no such table: files. Retrying in 1s...
2017-02-22 07:29:23: WARNING: SQLite: no such table: files errorcode: 1
2017-02-22 07:29:23: ERROR: Error preparing Query [SELECT COUNT(*) AS c FROM files]: no such table: files. Retrying in 1s...
2017-02-22 07:29:24: WARNING: SQLite: no such table: files errorcode: 1
2017-02-22 07:29:24: ERROR: Error preparing Query [SELECT COUNT(*) AS c FROM files]: no such table: files. Retrying in 1s...
2017-02-22 07:29:25: WARNING: SQLite: no such table: files errorcode: 1
2017-02-22 07:29:25: ERROR: Error preparing Query [SELECT COUNT(*) AS c FROM files]: no such table: files
2017-02-22 07:29:25: Dropping index...
2017-02-22 07:29:25: Starting creating files index...
2017-02-22 07:29:25: WARNING: SQLite: no such table: files errorcode: 1
2017-02-22 07:29:25: ERROR: Error preparing Query [SELECT id, shahash, filesize, clientid, next_entry, prev_entry, pointed_to FROM files ORDER BY shahash ASC, filesize ASC, clientid ASC, created DESC]: no such table: files. Retrying in 1s...
2017-02-22 07:29:26: WARNING: SQLite: no such table: files errorcode: 1
2017-02-22 07:29:26: ERROR: Error preparing Query [SELECT id, shahash, filesize, clientid, next_entry, prev_entry, pointed_to FROM files ORDER BY shahash ASC, filesize ASC, clientid ASC, created DESC]: no such table: files. Retrying in 1s...
2017-02-22 07:29:27: WARNING: SQLite: no such table: files errorcode: 1
2017-02-22 07:29:27: ERROR: Error preparing Query [SELECT id, shahash, filesize, clientid, next_entry, prev_entry, pointed_to FROM files ORDER BY shahash ASC, filesize ASC, clientid ASC, created DESC]: no such table: files. Retrying in 1s...
2017-02-22 07:29:28: WARNING: SQLite: no such table: files errorcode: 1
2017-02-22 07:29:28: ERROR: Error preparing Query [SELECT id, shahash, filesize, clientid, next_entry, prev_entry, pointed_to FROM files ORDER BY shahash ASC, filesize ASC, clientid ASC, created DESC]: no such table: files. Retrying in 1s...
2017-02-22 07:29:29: WARNING: SQLite: no such table: files errorcode: 1
2017-02-22 07:29:29: ERROR: Error preparing Query [SELECT id, shahash, filesize, clientid, next_entry, prev_entry, pointed_to FROM files ORDER BY shahash ASC, filesize ASC, clientid ASC, created DESC]: no such table: files. Retrying in 1s...
2017-02-22 07:29:30: WARNING: SQLite: no such table: files errorcode: 1
2017-02-22 07:29:30: ERROR: Error preparing Query [SELECT id, shahash, filesize, clientid, next_entry, prev_entry, pointed_to FROM files ORDER BY shahash ASC, filesize ASC, clientid ASC, created DESC]: no such table: files
Segmentation fault

I just tried it with a clean install and cannot reproduce the problem. How did you install it? Using the launchpad ppa?

sudo add-apt-repository ppa:uroni/urbackup
sudo apt update
sudo apt install urbackup-server