Install espeak-data by entering the following commands in the terminal:
sudo apt update sudo apt install espeak-data
Description:
Multi-lingual software speech synthesizer: speech data files
eSpeak is a software speech synthesizer for English, and some other languages. . This package contains necessary synthesizer data files needed for the espeak program, and the shared library.
Homepage: http://espeak.sourceforge.net/
Version: 1.48.04+dfsg-5
Section: universe/sound