Package information is present in db, but the package itself is absent on the servers

The package information is present in db, but the package itself is absent on the servers:

To upgrade (4):
  fzf                0.28.0-1     (0.27.3-1)     community  997.5 kB
  kpmcore            21.08.3-1.1  (21.08.2-1.1)  extra      691.4 kB
  libreoffice-still  7.1.7-1      (7.1.6-3)      extra      142.3 MB
  npm                8.1.3-1      (8.1.2-1)      community  1.4 MB

Total download size: 145.4 MB
Total installed size: -43 bytes

Apply transaction ? [y/N] y
Download of fzf (0.28.0-1) started
171.8 kB/145.4 MB
https://manjaro.mirrors.lavatech.top/unstable/extra/x86_64/kpmcore-21.08.3-1.1-x86_64.pkg.tar.zst: Error 404
515.8 kB/145.4 MB                                                                                                                                                                            
https://mirror.koddos.net/manjaro/unstable/extra/x86_64/kpmcore-21.08.3-1.1-x86_64.pkg.tar.zst: Error 404
Download of npm (8.1.3-1) started                                                                                                                                                            
Download of fzf (0.28.0-1) finished                                                                                                                                                          
1.2 MB/145.4 MB                                                                                                                                                                              
https://ftp.nluug.nl/pub/os/Linux/distr/manjaro/unstable/extra/x86_64/kpmcore-21.08.3-1.1-x86_64.pkg.tar.zst: Error 404
Download of libreoffice-still (7.1.7-1) started                                                                                                                                              
Download of npm (8.1.3-1) finished                                                                                                                                                           
25.6 MB/145.4 MB                                                                                                                                                                             
...

What’s the proper way to report an mirror problem?
Or just do not report it and server maintainer will know that problem or such problem will be automatically resolved with no any report needed?

The question covers only Manjaro infrastructure, I know that a user can switch to another server in order to get a package from them if it was not deleted by some broadcast command from all servers but unfortunately leaved a db file untouched so it continues containing that package info.

PS
Probably I got it: it is the problem which should be report: I assume that issues goes like this: a central server lacks the package and all mirror servers just downloads all the stuff: DBs, package files from central server and the error is that central server lacks the file, so it should be reported. Am I right on that assume or how the infrastructure works and what’s the error propagation source?

Update your mirrors. Not every one is in sync at the same time.

https://repo.manjaro.org/

Oh, my request to server was while it got new DB files but not got the package yet?

HM, looks like wrong idea:


and after that I did:

pamac upgrade --force-refresh                                                                                                                             1 ✘  1m 9s  
Preparing...
Synchronizing package databases...
Refreshing core.db...                                                                                                                                                                        
Refreshing extra.db...                                                                                                                                                                       
Refreshing community.db...                                                                                                                                                                   
Refreshing multilib.db...                                                                                                                                                                    
Refreshing kde-unstable.db...                                                                                                                                                                
Refreshing chaotic-aur.db...                                                                                                                                                                 
Refreshing core.files...                                                                                                                                                                     
Refreshing extra.files...                                                                                                                                                                    
Refreshing community.files...                                                                                                                                                                
Refreshing multilib.files...                                                                                                                                                                 
Refreshing kde-unstable.files...                                                                                                                                                             
Refreshing chaotic-aur.files...                                                                                                                                                              
Resolving dependencies...                                                                                                                                                                    
Checking inter-conflicts...

To upgrade (4):
  fzf                0.28.0-1     (0.27.3-1)     community  
  kpmcore            21.08.3-1.1  (21.08.2-1.1)  extra      691.4 kB
  libreoffice-still  7.1.7-1      (7.1.6-3)      extra      118.9 MB
  npm                8.1.3-1      (8.1.2-1)      community  

Total download size: 119.6 MB
Total installed size: -43 bytes

Apply transaction ? [y/N] y
https://manjaro.mirrors.lavatech.top/unstable/extra/x86_64/kpmcore-21.08.3-1.1-x86_64.pkg.tar.zst: Error 404
https://mirror.koddos.net/manjaro/unstable/extra/x86_64/kpmcore-21.08.3-1.1-x86_64.pkg.tar.zst: Error 404
Download of libreoffice-still (7.1.7-1) started                                                                                                                                              
483.1 kB/119.6 MB                                                                                                                                                                            
https://ftp.nluug.nl/pub/os/Linux/distr/manjaro/unstable/extra/x86_64/kpmcore-21.08.3-1.1-x86_64.pkg.tar.zst: Error 404
57.5 MB/119.6 MB                             

bu by that 15 minutes server should get the file, anyway one is my mirrors was marked as up to date (15 minutes is not enough to sync in order to get all new files?)

$ tail -n5 /var/log/pacman.log
[2021-11-04T23:03:05+0300] [ALPM] running 'xorg-mkfontscale.hook'...
[2021-11-05T01:29:59+0300] [PAMAC] synchronizing package lists
[2021-11-05T01:35:59+0300] [PAMAC] synchronizing package lists
[2021-11-05T01:36:27+0300] [PAMAC] synchronizing package lists
[2021-11-05T02:04:02+0300] [PAMAC] synchronizing package lists
$

(even 18 minutes)


EDIT
A bit later:

$ pamac clean -v
Number of versions of each package to keep in the cache: 0

/var/cache/pacman/pkg/fzf-0.28.0-1-x86_64.pkg.tar.zst
/var/cache/pacman/pkg/libreoffice-still-7.1.7-1-x86_64.pkg.tar.zst.part
/var/cache/pacman/pkg/npm-8.1.3-1-any.pkg.tar.zst

To delete: 3 files  (60.0 MB)
Clean cache ? [y/N] y

$ pamac upgrade --force-refresh
Preparing...
Synchronizing package databases...
Refreshing core.db...                                                                                                                                                                        
Refreshing extra.db...                                                                                                                                                                       
Refreshing community.db...                                                                                                                                                                   
Refreshing multilib.db...                                                                                                                                                                    
Refreshing kde-unstable.db...                                                                                                                                                                
Refreshing chaotic-aur.db...                                                                                                                                                                 
Refreshing core.files...                                                                                                                                                                     
Refreshing extra.files...                                                                                                                                                                    
Refreshing community.files...                                                                                                                                                                
Refreshing multilib.files...                                                                                                                                                                 
Refreshing kde-unstable.files...                                                                                                                                                             
Refreshing chaotic-aur.files...                                                                                                                                                              
Resolving dependencies...                                                                                                                                                                    
Checking inter-conflicts...

To upgrade (4):
  fzf                0.28.0-1     (0.27.3-1)     community  997.5 kB
  kpmcore            21.08.3-1.1  (21.08.2-1.1)  extra      691.4 kB
  libreoffice-still  7.1.7-1      (7.1.6-3)      extra      142.3 MB
  npm                8.1.3-1      (8.1.2-1)      community  1.4 MB

Total download size: 145.4 MB
Total installed size: -43 bytes

Apply transaction ? [y/N] y
Download of libreoffice-still (7.1.7-1) started                                                                                                                                              
Download of fzf (0.28.0-1) started                                                                                                                                                           
Download of fzf (0.28.0-1) finished                                                                                                                                                          
Download of npm (8.1.3-1) started                                                                                                                                                            
Download of npm (8.1.3-1) finished                                                                                                                                                           
5.5 MB/145.4 MB                                                                                                                                                                              
https://manjaro.mirrors.lavatech.top/unstable/extra/x86_64/kpmcore-21.08.3-1.1-x86_64.pkg.tar.zst: Error 404
Download of kpmcore (21.08.3-1.1) started                                                                                                                                                    
Download of kpmcore (21.08.3-1.1) finished                                                                                                                                                   
56.8 MB/145.4 MB About 23 seconds remaining                                                                                                                                                  

Transaction cancelled.
$

Now at least one server from my mirrors does not have the file at and at least one server has it, which happen in

$ tail -n2 /var/log/pacman.log
[2021-11-05T02:04:02+0300] [PAMAC] synchronizing package lists
[2021-11-05T02:15:21+0300] [PAMAC] synchronizing package lists

It would be interesting to know the info about error of the 404 on a package file’s propagation source/where it comes from.