KIO 5.80 breaks Dolphin, at least

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cat /etc/pacman.conf
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#
# /etc/pacman.conf
#
# See the pacman.conf(5) manpage for option and repository directives

#
# GENERAL OPTIONS
#
[options]
# The following paths are commented out with their default values listed.
# If you wish to use different paths, uncomment and update the paths.
#RootDir     = /
#DBPath      = /var/lib/pacman/
#CacheDir    = /var/cache/pacman/pkg/
#LogFile     = /var/log/pacman.log
#HookDir     = /etc/pacman.d/hooks/
HoldPkg     = pacman glibc linux
#XferCommand = /usr/bin/wget --passive-ftp -c -O %o %u
#XferCommand = /usr/bin/curl -L -C - -f -o %o %u
#CleanMethod = KeepInstalled
Architecture = auto

# Pacman won't upgrade packages listed in IgnorePkg and members of IgnoreGroup
#IgnorePkg   = linux linux-next
#IgnoreGroup =

#NoUpgrade   =
#NoExtract   =

# Misc options (all disabled by default)
#UseSyslog
#ShowSize
Color
#TotalDownload
CheckSpace
VerbosePkgLists
ILoveCandy

# By default, pacman accepts packages signed by keys that its local keyring
# trusts (see pacman-key and its man page), as well as unsigned packages.
SigLevel = Never
LocalFileSigLevel = Never
#RemoteFileSigLevel = Required

#
# REPOSITORIES
#   - can be defined here or included from another file
#   - pacman will search repositories in the order defined here
#   - local/custom mirrors can be added here or in separate files
#   - repositories listed first will take precedence when packages
#     have identical names, regardless of version number
#   - URLs will have $repo replaced by the name of the current repo
#   - URLs will have $arch replaced by the name of the architecture
#
# Repository entries are of the format:
#       [repo-name]
#       Server = ServerName
#       Include = IncludePath
#
# The header [repo-name] is crucial - it must be present and
# uncommented to enable the repo.
#

#[kde-next]
#Include = /etc/pacman.d/mirrorlist

#[build]
#Include = /etc/pacman.d/mirrorlist

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

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

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

# An example of a custom package repository.  See the pacman manpage for
# tips on creating your own repositories.
#[custom]
#Server = file:///home/custompkgs


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pacman -Qm
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arm-none-eabi-binutils 2.35.1-1
arm-none-eabi-gcc 10.2.0-1
arm-none-eabi-newlib 3.3.0-1
ccache 4.1-1
cppcheck 2.3-1
guile2.0 2.0.14-3
libcl 1.1.12-1
libfdk-aac 2.0.1-2
libkgeomap 20.08.3-1
libldac 2.0.2.3-1
libomxil-bellagio 0.9.3-3
libsecp256k1 20201021+1209+gac05f61-1
x86_energy_perf_policy 5.10-2

Other is just 2 full circle of core -> build update then downgrade build -> core.

Full log is long and it can't fit here, nothing insteresting there, i don't have any other source to update. Packages showed by pacman -Qm are compiled by me.

So error messages are same, just timestamps as root, probably bug in oh-my-bash, nothing related to the issue with KIO.
Powerline profile of oh-my-bash do it

THEME_CHECK_SUDO=${THEME_CHECK_SUDO:=true}

  if [[ "${THEME_CHECK_SUDO}" = true ]]; then
    if sudo -n uptime 2>&1 | grep -q "load"; then
      color=${USER_INFO_THEME_PROMPT_COLOR_SUDO}
    fi
  fi

It's hack to have same theme in root console.