/usr/lib/x86_64-linux-gnu/gtk-3.0/modules/libcanberra-gtk-module.so is in libcanberra-gtk3-module 0.30-2.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/gtk-3.0/modules/libcanberra-gtk3-module.so