Here's the update attempt:

Root      : /
Conf File : /etc/pacman.conf
DB Path   : /var/lib/pacman/
Cache Dirs: /var/cache/pacman/pkg/  
Hook Dirs : /usr/share/libalpm/hooks/  /etc/pacman.d/hooks/  
Lock File : /var/lib/pacman/db.lck
Log File  : /var/log/pacman.log
GPG Dir   : /etc/pacman.d/gnupg/
Targets   : None
:: Synchronizing package databases...
 core is up to date
 extra is up to date
 community                                   4.3 MiB  4.63M/s 00:01 [#####################################] 100%
 multilib is up to date
 archlinuxfr is up to date
:: Starting full system upgrade...
resolving dependencies...
looking for conflicting packages...

Packages (53) bluedevil-1:5.11.5-1  breeze-5.11.5-1  breeze-gtk-5.11.5-1  cryptsetup-2.0.0-2  discover-5.11.5-1
              drkonqi-5.11.5-1  gwenview-17.12.0-2  imagemagick-7.0.7.19-1  imagemagick-doc-7.0.7.19-1
              json-c-0.13-1  kactivitymanagerd-5.11.5-1  kde-cli-tools-5.11.5-1  kde-gtk-config-5.11.5-1
              kdecoration-5.11.5-1  kdeplasma-addons-5.11.5-1  kgamma5-5.11.5-1  khotkeys-5.11.5-1
              kinfocenter-5.11.5-1  kmenuedit-5.11.5-1  knetattach-5.11.5-1  kscreen-5.11.5-1
              kscreenlocker-5.11.5-1  ksshaskpass-5.11.5-1  ksysguard-5.11.5-1  kuiserver-5.11.5-1
              kwallet-pam-5.11.5-1  kwayland-integration-5.11.5-1  kwin-5.11.5-1  kwrited-5.11.5-1
              libindi-1.6.0-1  libkscreen-5.11.5-1  libksysguard-5.11.5-1  libmagick-7.0.7.19-1
              libmagick6-6.9.9.31-1  milou-5.11.5-1  oxygen-5.11.5-1  plasma-desktop-5.11.5-1
              plasma-integration-5.11.5-1  plasma-nm-5.11.5-1  plasma-pa-5.11.5-1  plasma-sdk-5.11.5-1
              plasma-vault-5.11.5-1  plasma-workspace-5.11.5-1  plasma-workspace-wallpapers-5.11.5-1
              polkit-kde-agent-5.11.5-1  powerdevil-5.11.5-1  protobuf-3.5.0.1-1  qt5-base-5.10.0-2
              qt5-webengine-5.10.0-2  sddm-kcm-5.11.5-1  systemsettings-5.11.5-1  user-manager-5.11.5-1
              xdg-desktop-portal-kde-5.11.5-1

Total Download Size:   177.92 MiB
Total Installed Size:  500.62 MiB
Net Upgrade Size:        0.99 MiB

:: Proceed with installation? [Y/n] Y
error: Partition / too full: 50693 blocks needed, 13223 blocks free
error: failed to commit transaction (not enough free disk space)
Errors occurred, no packages were upgraded.

##(wget wasn't showing this directly so I copied it to a text and catted it there.)