/usr/lib/x86_64-linux-gnu/libflite_cmu_grapheme_lex.so.1 is in libflite1 2.1-release-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libflite_cmu_grapheme_lex.so.2.1
/usr/lib/x86_64-linux-gnu/libflite_cmu_grapheme_lex.so.2.1