Info about space used by seafile-data

Hello, I’m using CE v 6.3.4.

Why there is a difference on the space used by web-ui and the actual server disk space used:

This img shows the space used from web interface is 14.3 GB

while actual used space shown by ncdu /home/seafile/seafile-data is 25.4 GB!

I’ve already run to cleanup but still there is difference in the two.

How can this be? How can I free more unused space?

Please look for similar questions before opening another one. The space of versioning isn’t indexed by Seafile. You should only see how much people used from their libraries.