Warning: include_once(./classes/convcr2.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\mobile\envialatlong.php on line 3

Warning: include_once(): Failed opening './classes/convcr2.php' for inclusion (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\mobile\envialatlong.php on line 3

Warning: Undefined variable $connvcr in C:\xampp\htdocs\mobile\envialatlong.php on line 17

Fatal error: Uncaught Error: Call to a member function prepare() on null in C:\xampp\htdocs\mobile\envialatlong.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\mobile\envialatlong.php on line 17