How to fix Fatal Error on XAMPP

did not worked

when previewing my PHP project "Fatal error: Cannot redeclare str_contains() in C:\xampp\htdocs\myproject\helpers\Functions.php on line 524"

public function create_element_instance( array $element_data, array $element_args = [], Element_Base $element_type = null ) {
PHP Syntax Check: Parse error: syntax error, unexpected 'public' (T_PUBLIC), expecting end of file in your code on line 1
Fatal error in local host. Kind provide advice

yeah it worked for me thanks

Did not work for me