Not able to install window tilling assistant in Ubuntu 24.04 ( or any other extension)

I am not able to install any extension using the extension manager in Lubuntu 24.04.

When I open an extension in extension manager I get this error:

    Support Log----Version: 0.5.0Package Format: Unknown PackageStatus: Third PartyOS: Ubuntu 24.04 LTS (Noble Numbat)GTK: 4.14.2Libadwaita: 1.5.0----Could not check for updates: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name :1.527 was not provided by any .service files

I tried reinstalling but it didn't work.