Undefined method failValidationErrors (PHP version 8.0.5)

This error occurred when I used my laptop with PHP version 8.0.5
Note: This is working on other PC with PHP version 8.1
https://drive.google.com/file/d/1vbSQRrY...sp=sharing

Here's the snippet code:
https://drive.google.com/file/d/15ZTydUn...sp=sharing
https://drive.google.com/file/d/1NZneOl5...sp=sharing

Can I run this with my current installed PHP version 8.0.5 as I can't find any documentation that I am required to install latest PHP version.