No log files when loged into FreeBPX

Hi guys,

I recently discovered that when I login to FreeBPX Admin tool ( IpAddress/admin/config.php) and click on “Reports” the actual call log always empty…I do see however a number next to "Number of calls:“ . Everything else works fine… in and outgoing calls are fine…
Just the actual log file does not display…

Does anyone have an idea?

Thx a lot