Warning: Undefined variable $CODE in /home/secure/lang/language.it.php on line 1013

Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /home/secure/libs/webpanel.database.php:49
Stack trace:
#0 /home/secure/index.php(44): ConnectDB()
#1 {main}
  thrown in /home/secure/libs/webpanel.database.php on line 49