Archlinux announced that they will remove the deprecated repository in Cleaning up old repositories via archive.is

Now it's happened.

If you have seen errors like:

:) paru
:: Synchronizing package databases...
 core                                    115.5 KiB   700 KiB/s 00:00 [####################################################] 100%
 extra                                     7.7 MiB  8.90 MiB/s 00:01 [####################################################] 100%
 community.db failed to download
 archlinuxcn                            1404.2 KiB  4.06 MiB/s 00:00 [####################################################] 100%
error: failed retrieving file 'community.db' from mirrors.tuna.tsinghua.edu.cn : The requested URL returned error: 404
error: failed retrieving file 'community.db' from mirrors.ustc.edu.cn : The requested URL returned error: 404
error: failed retrieving file 'community.db' from mirrors.xjtu.edu.cn : The requested URL returned error: 404
error: failed retrieving file 'community.db' from mirrors.nju.edu.cn : The requested URL returned error: 404
error: failed retrieving file 'community.db' from mirrors.jlu.edu.cn : The requested URL returned error: 404

Please go check your /etc/pacman.conf and remove the section that is deprecated:

[community]
Include = /etc/pacman.d/mirrorlist

All deprecated repositories include:

• [community]
• [community-testing]
• [testing]
• [testing-debug]
• [staging]
• [staging-debug]