Use org.freedesktop.FileManager1 instead of OpenURI portal
The OpenURI portal is broken. Let's use the org.freedesktop.FileManager1 dbus interface instead.
dbus-send --print-reply --dest=org.freedesktop.FileManager1 /org/freedesktop/FileManager1 org.freedesktop.FileManager1.ShowFolders array:string:"file:///home/" string:"`date`"