Fatal error: Uncaught TypeError: fwrite(): Argument #1 ($stream) must be of type resource, null given in C:\xampp\htdocs\rcon.class.php:60 Stack trace: #0 C:\xampp\htdocs\rcon.class.php(60): fwrite(NULL, '\n\x00\x00\x00\x01\x00\x00\x00\x03\x00\x00\x00\x00\x00', 14) #1 C:\xampp\htdocs\rcon.class.php(33): RCon->_Write(3, NULL) #2 C:\xampp\htdocs\example.php(6): RCon->Auth() #3 {main} thrown in C:\xampp\htdocs\rcon.class.php on line 60