Can't update or install packages

Hi,
I can’t update or install packages. I’ve followed pamac or pacman troubleshootings, but nothing really worked so far. Any idea what to do?

sudo pacman -Syuu
error: GPGME error: No data
error: GPGME error: No data
error: GPGME error: No data
error: GPGME error: No data
:: Synchronizing package databases...
 core                         169.3 KiB   513 KiB/s 00:00 [###############################] 100%
 extra                       1883.5 KiB  5.69 MiB/s 00:00 [###############################] 100%
 community                      6.6 MiB  5.57 MiB/s 00:01 [###############################] 100%
 multilib                     174.7 KiB  2.24 MiB/s 00:00 [###############################] 100%
error: GPGME error: No data
error: GPGME error: No data
error: GPGME error: No data
error: GPGME error: No data
error: failed to synchronize all databases (invalid or corrupted database (PGP signature))

Thanks!

Well, first off, you should never use sudo pacman -Syuu unless you’re trying to downgrade packages as well… which could break your system. Should never be used unless the announcement says you should.

You should be using sudo pacman -Syyu or sudo pacman -Syu

Do:

sudo pacman-mirrors -f 5
sudo pacman -Syyu

The 1st command will refresh your mirror list and rank them by the top 5 fastest.

Try the search function, there are plenty of hits:
https://forum.manjaro.org/search?expanded=true&q=GPGME%20error:%20No%20data