ارور php

سلام من میخوام به دیتا بیس دسترسی داشته باشم برای header
ولی وقتی کد رو مینویسم صفحه تو بارگذاری گیر میکنه و بعد از چند دقیقه ارور طولانی میاره

Warning: Uncaught PDOException: PDO::construct(): Error while reading greeting packet. PID=4912 in C:\xampp\htdocs\php-course-blog\include\db.php:6 Stack trace: #0 C:\xampp\htdocs\php-course-blog\include\db.php(6): PDO->construct('mysql:host=loca...', 'root', '') #1 C:\xampp\htdocs\php-course-blog\include\layout\header.php(4): include('C:\xampp\htdocs...') #2 C:\xampp\htdocs\php-course-blog\index.php(2): include('C:\xampp\htdocs...') #3 {main} Next PDOException: SQLSTATE[HY000] [2006] MySQL server has gone away in C:\xampp\htdocs\php-course-blog\include\db.php:6 Stack trace: #0 C:\xampp\htdocs\php-course-blog\include\db.php(6): PDO->__construct('mysql:host=loca...', 'root', '') #1 C:\xampp\htdocs\php-course-blog\include\layout\header.php(4): include('C:\xampp\htdocs...') #2 C:\xampp\htdocs\php-course-blog\index.php(2): include('C:\xampp\htdocs...') #3 {main} thrown in C:\xampp\htdocs\php-course-blog\include\db.php on line 6

Fatal error: Maximum execution time of 120 seconds exceeded in C:\xampp\htdocs\php-course-blog\include\layout\header.php on line 4