error: kolourpaint: signature from "Antonio Rojas <arojas@archlinux.org>" is invalid
:: File /var/cache/pacman/pkg/kolourpaint-20.12.0-1-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n]
error: print-manager: signature from "Antonio Rojas <arojas@archlinux.org>" is invalid
:: File /var/cache/pacman/pkg/print-manager-20.12.0-1-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n]
error: pycharm-community-edition: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is invalid
:: File /var/cache/pacman/pkg/pycharm-community-edition-2020.2.3-4-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n]
error: virtualbox-sdk: signature from "Evangelos Foutras <evangelos@foutrelis.com>" is invalid
:: File /var/cache/pacman/pkg/virtualbox-sdk-6.1.16-3-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n]
error: failed to commit transaction (invalid or corrupted package)
Errors occurred, no packages were upgraded.
pacman mirrorlist
##
## Manjaro Linux default mirrorlist
## Generated on 2020-12-31 15:00
##
## Please use 'pacman-mirrors -f [NUMBER] [NUMBER]' to modify mirrorlist
## (Use 0 for all mirrors)
##
## Country : Germany
Server = https://manjaro.moson.eu/stable/$repo/$arch
## Country : Germany
Server = https://mirror.alpix.eu/manjaro/stable/$repo/$arch
## Country : United_States
Server = https://us.mirrors.fossho.st/manjaro/stable/$repo/$arch
## Country : Denmark
Server = https://www.uex.dk/public/manjaro/stable/$repo/$arch
## Country : Germany
Server = https://manjaro.re/stable/$repo/$arch
## Country : Austria
## Server = http://mirror.easyname.at/manjaro/stable/$repo/$arch
## Country : Greece
## Server = https://ftp.cc.uoc.gr/mirrors/linux/manjaro/stable/$repo/$arch
## Country : Brazil
Server = https://manjaro.c3sl.ufpr.br/stable/$repo/$arch
Some adjoined errors
error: failed retrieving file 'pycharm-community-edition-2020.2.3-4-x86_64.pkg.tar.zst' from mirror.alpix.eu : expected download size exceeded
error: failed retrieving file 'pycharm-community-edition-2020.2.3-4-x86_64.pkg.tar.zst' from us.mirrors.fossho.st : expected download size exceeded
error: failed retrieving file 'pycharm-community-edition-2020.2.3-4-x86_64.pkg.tar.zst' from www.uex.dk : expected download size exceeded
error: failed retrieving file 'pycharm-community-edition-2020.2.3-4-x86_64.pkg.tar.zst' from manjaro.re : expected download size exceeded
error: failed retrieving file 'pycharm-community-edition-2020.2.3-4-x86_64.pkg.tar.zst' from manjaro.c3sl.ufpr.br : expected download size exceeded
warning: failed to retrieve some files
Moderator Edit: Combined everything into the post, formatting