How to use "gnome-software --install="?

I am trying to use "gnome-software --install=" to install shell extension call "blyr", which is found in Add-ons --> Shell Extensions. However the cmd don't seem to work. What is the right syntax for this cmd?

The cmd `$ gnome-software --search blyr` will cause the extension to appear in "gnome-software". The extension can be found.

Below are the error msg.

$ sudo gnome-software --install=blyr
04:40:46:0158 Gs enabled plugins: systemd-updates, packagekit-offline, fwupd, packagekit, packagekit-refine-repos, os-release, desktop-categories, packagekit-upgrade, packagekit-url-to-app, packagekit-proxy, packagekit-local, packagekit-refresh, appstream, desktop-menu-path, hardcoded-blacklist, generic-updates, packagekit-refine, steam, rewrite-resource, odrs, hardcoded-featured, modalias, hardcoded-popular, packagekit-history, provenance, icons, provenance-license, key-colors, key-colors-metadata
04:40:46:0158 Gs disabled plugins: ubuntuone, dummy, dpkg, repos, shell-extensions, epiphany, snap
04:40:46:0856 Gs Need to use a valid unique-id: blyr

$ sudo gnome-software --<email address hidden>
04:48:55:0162 Gs enabled plugins: systemd-updates, packagekit-offline, fwupd, packagekit, packagekit-refine-repos, os-release, desktop-categories, packagekit-upgrade, packagekit-url-to-app, packagekit-proxy, packagekit-local, packagekit-refresh, appstream, desktop-menu-path, hardcoded-blacklist, generic-updates, packagekit-refine, steam, rewrite-resource, odrs, hardcoded-featured, modalias, hardcoded-popular, packagekit-history, provenance, icons, provenance-license, key-colors, key-colors-metadata
04:48:55:0162 Gs disabled plugins: ubuntuone, dummy, dpkg, repos, shell-extensions, epiphany, snap
04:48:55:0786 Gs Need to use a valid unique-id: <email address hidden>