User shell set to /dev/null

Hi all

I have a strange problem with ISPConfig. Suddenly the shell of all users of a concrete domain is assigned to /dev/null instead of /bin/false

Admin user cannot login, because /dev/null is not in /etc/shells, but I don't want to add it, because all the rest of domains have /bin/false as shell...

Is there any logical explanation to this?

Thank you very much

 

I'm sorry very much...

I reply myself:

It was as simple as selecting "FTP access" on "Basis" tab.

It's late at night, I'm tired...