sudo /usr/bin/sudo must be owned by uid 0 and have the setuid bit set how to solve it in ubuntu 18.04 code example

Example: sudo: /usr/local/bin/sudo must be owned by uid 0 and have the setuid bit set

mount -o remount,rw /

mount --all

chown root:root /usr/bin/sudo

chmod 4755 /usr/bin/sudo

restart