weird update issue with /etc/webmin/webmin/

Lately I have been getting update errors when the cron job for /etc/webmin/webmin/ runs.

All I get back in email is....

Error: Download failed :
Download failed :

Now I have no idea why this happens because when I manually run /etc/webmin/webmin/ from the command line I see no errors at all. And this ONLY happens on my debian clients and no other OS.

Any clue?

Closed (fixed)