Stream failed to open stram file

hallo , sorry about my english… I’m a new with web and php…

the first line from my index.php:

    indent preformatted text by 4 spaces

?php ### messages.php ### utf8 ### äöüÄÖÜ ###
include ‘classprove.php’;
header(“Content-Type: text/html; Charset=utf-8”);
mb_internal_encoding(‘UTF-8’);
date_default_timezone_set(‘UTC’);

$ProveContackt=new classprove;

?>

Warning : include(classprove.php): failed to open stream: No such file or directory in /storage/ssd2/418/6831418/public_html/index.php on line 2

Warning : include(): Failed opening ‘classprove.php’ for inclusion (include_path=’.:/usr/share/pear:/usr/share/php’) in /storage/ssd2/418/6831418/public_html/index.php on line 2

Warning : Cannot modify header information - headers already sent by (output started at /storage/ssd2/418/6831418/public_html/index.php:2) in /storage/ssd2/418/6831418/public_html/index.php on line 3

Fatal error : Uncaught Error: Class ‘classprove’ not found in /storage/ssd2/418/6831418/public_html/index.php:8 Stack trace: #0 {main} thrown in /storage/ssd2/418/6831418/public_html/index.php on line 8

Can please anyone explain with easy words how can this problem to solution , very Thanks !

It is telling you it tried to open classprove.php but it cannot find that file.

I have found classprove but you’ve missed the .php extension.

Kind of fixed… but still errors appearing.

Very Thanks ! , this was the problem…