Krusader and Dolphin do not open iso zip 7zip

Dolphin: Ctrl+ Shift + , => Navigation => Open archives as folder.

Krusader: Ctrl+ Shift + , => Archives => Open Archives As Folders.

Krusader: No permission to zip into certain folder.

sudo apt reinstall zip unzip

Failed to pack /media/user/sda1/archive.zip. ied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied 

dpkg --get-selections | grep -v deinstall | grep zip

bzip2                                           install

bzip2-doc                                       install

gzip                                            install

libminizip1:amd64                               install

libzip4:amd64                                   install

p7zip                                           install

p7zip-full                                      install

p7zip-rar                                       install

python3-zipp                                    install

unzip                                           install

zip                                             install

Discover > Dolphin - Dolphin Plugins to get Mount ISO in right click menu.

Bug with ISO mount - some ISOs appear under Devices after Dolphin restart.

Kubuntu 20.04 solution that may not work:

/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kio/kio_krarc.so

/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kio/kio_iso.so

sudo cp kio_iso.so kio_krarc.so /usr/lib/x86_64-linux-gnu/qt5/plugins