PiCar-X TTS Not Working

General
1

Bought one a year ago and the Text to speech works well, but the other three I bought and set-up for students will not run the ESpeak program, so we cannot hear the text. It comes up as picowave on the print of the text when we run the code.

2

1、Do you use Python control or APP control?
2、The product you bought a year ago, have you updated the library in time by now?
If you are using APP control:
Please update the APP version, and the ezblock OS mirror version, (the latest version is 1.2.2)
Mirror link: EzblockStudio/download
If using Python control:
Please pull the code again:
cd ~/picar-x
git pull
sudo python3 setup.py install

cd ~/vilib
git pull
sudo python3 install.py

cd ~/robot-hat
git pull
sudo python3 setup.py install

Execute:
cd /home/pi/picar-x
sudo bash i2samp.sh
and reboot the Raspberry Pi.