Warning: Undefined array key "protocolo" in C:\xampp\htdocs\ce\penaforte\upload.php on line 4

Fatal error: Uncaught Error: Undefined constant "DB_HOST" in C:\xampp\htdocs\ce\penaforte\upload.php:6 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ce\penaforte\upload.php on line 6