Warning: mysqli::__construct(): Error while reading greeting packet. PID=27512 in D:\www\www685\fh\core\v2019\class\class.db.php on line 44

Warning: mysqli::__construct(): (HY000/2006): MySQL server has gone away in D:\www\www685\fh\core\v2019\class\class.db.php on line 44

Fatal error: Uncaught Error: mysqli object is already closed in D:\www\www685\fh\core\v2019\class\class.db.php:62
Stack trace:
#0 D:\www\www685\fh\core\v2019\class\class.db.php(62): mysqli->select_db()
#1 D:\www\www685\fh\core\v2019\class\class.db.php(50): DB->SelectDb()
#2 D:\www\www685\fh\core\v2019\class\class.db.php(33): DB->DbConnect()
#3 D:\www\www685\fh\core\v2019\class\class.layout.php(32): DB->__construct()
#4 D:\www\www685\fh\ferienhaus-colonia-zurighese\buchungsplan\index.php(1): CmsLayout->__construct()
#5 {main}
  thrown in D:\www\www685\fh\core\v2019\class\class.db.php on line 62