zypper ref
....
Problem retrieving files from 'packman_new'.
Download (curl) error for 'https://ftp.gwdg.de/pub/linux/misc/packman/suse/openSUSE_Leap_15.4/repodata/repomd.xml':
Error code: Connection failed
Error message: Failed to connect to ftp.gwdg.de port 443 after 77 ms: Connection refused
I can’t try another mirrors because Palemoon get
Service Temporarily Unavailable
The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.
Problem retrieving files from 'Packman'.
Download (curl) error for 'https://ftp.gwdg.de/pub/linux/misc/packman/suse/openSUSE_Leap_15.3/repodata/repomd.xml':
Error code: Connection failed
Error message: Failed to connect to ftp.gwdg.de port 443: Connection refused
Problem retrieving files from 'Packman 15.4 Repository'.
Download (curl) error for 'http://ftp.gwdg.de/pub/linux/misc/packman/suse/openSUSE_Leap_15.4/repodata/repomd.xml':
Error code: Connection failed
Error message: Failed to connect to ftp.gwdg.de port 80 after 134 ms: Connection refused
Please see the above error message for a hint.
Warning: Skipping repository 'Packman 15.4 Repository' because of the above error.
Some of the repositories have not been refreshed because of an error.
Loading repository data...
Reading installed packages...