/usr/lib/x86_64-linux-gnu/libdynamic_reconfigure_config_init_mutex.so.0d is in libdynamic-reconfigure-config-init-mutex0d 1.5.46-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libdynamic_reconfigure_config_init_mutex.so.1.5.46