Just to make sure...do you actually mean Fedora 25? That has been EOL for
quite a long time. You can probably configure yum/dnf (I don't remember when dnf got added) to use https://archive.fedoraproject.org/pub/fedora/linux/updates/25 and change the other repository links to archive.fedoraproject.org as well if you must use it for some reason though it is well beyond support at this point.

On July 9, 2021 3:11:15 AM CDT, wubo <wubo459097610@163.com> wrote:
# repo = updates-testing-f25 arch = x86_64 error: invalid repo or arch
# following repositories are available:

why
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