Hi I have accidentally removed all trusted.pgp even directory with trusted.pgp.d in /etc/apt/. But I have restored with sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32 for example and try to add all key but when i try to upgrade, every thing seems good, but for some reason, some software return error like,

No such key 'button-layout' in schema 'org.gnome.mutter:Pantheon' as specified in override file '/usr/share/glib-2.0/schemas/20_elementary.pantheon.wm.gschema.override'; ignoring override for this key.

There's another error that I don't take note of.

How can I fix this??

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