Warning: mysqli_connect(): Error while reading greeting packet. PID=252499 in /strona/_xcms/classes/phplib/db_mysql.inc on line 81

Warning: mysqli_connect(): (HY000/2006): MySQL server has gone away in /strona/_xcms/classes/phplib/db_mysql.inc on line 81

Fatal error: Uncaught TypeError: mysqli_select_db(): Argument #1 ($mysql) must be of type mysqli, bool given in /strona/_xcms/classes/phplib/db_mysql.inc:87 Stack trace: #0 /strona/_xcms/classes/phplib/db_mysql.inc(87): mysqli_select_db() #1 /strona/_xcms/classes/phplib/db_mysql.inc(122): DB_Sql->connect() #2 /strona/_xcms/classes/phplib/db_mysql.inc(49): DB_Sql->query() #3 /strona/_xcms/classes/functions.inc(4): DB_Sql->__construct() #4 /strona/pl/xml.php(9): include('...') #5 {main} thrown in /strona/_xcms/classes/phplib/db_mysql.inc on line 87