deleting server logs on iridium C3 server not working?

Hi,

I would like to delete the current logs on my UMC C3 iridium server.

When i push the 'delete all logs' button, i see that all references to the log files are removed at that moment.

However, when i load a new project to the server, all old log files are present again.

So: how to remove the logs from the servers through the web interface?

iRidium Server (build 1.3.6.16739, Mar 28 2019 17:38:20) | Web-panel: v1.0.3.20 (Mar 12 2019)

 working with studio V1.3.6.20458

Thanks,

Joachim