Activities backups shows Used Storage shows Unknown

Hello ALL,

I have Urbackup server (Ubuntu 14.04 x64) on current version 1.4.6 ,
Until two weeks ago all my Last activities showed used storage the actual size he took , but from some reason all backups since two weeks shows “Used storage” Unknown for all,
Any idea how to fix it ?
Please advice

It only calculates the statistics if there is no backup running after a backup or during the nightly cleanup
The nightly cleanup may also take a lot of time and is still running. This will be improved in 1.5.

Thanks looking forwarded for next release