Warning: mysqli_connect(): (HY000/2002): No such file or directory in /home/libellus/public_html/libs/libs.php on line 30

Fatal error: Uncaught TypeError: mysqli_error(): Argument #1 ($mysql) must be of type mysqli, bool given in /home/libellus/public_html/libs/libs.php:30 Stack trace: #0 /home/libellus/public_html/libs/libs.php(30): mysqli_error(false) #1 /home/libellus/public_html/index.php(23): ConnectDB() #2 {main} thrown in /home/libellus/public_html/libs/libs.php on line 30