file '/repodata/repomd.xml' not found with zypper up

Hello,
I’m using Tumbleweed (Gnome) and today when I tried to check if there any updates through zypper up (also tried zypper dup), the following error message shows up:

File '/repodata/repomd.xml' not found on medium 'http://ftp.gwdg.de/pub/linux/misc/packman/suse/openSUSE_Tumbleweed/'

Any suggestions to solve the problem please?
Thank you very much :slight_smile: !

There are some Threads about that Problem with ftp.gwdg.de.
Try another Mirror.

Thank you.