weird update issue with /etc/webmin/webmin/update.pl

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

All I get back in email is....

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

Any clue?

Status: 
Closed (fixed)