Composer unable to load dependencies

I just uploaded my laravel project and I’ve followed the tutorials that are scattered on the internet. After that I got the following error message. My guess is that the composer is not loading properly

include(/storage/ssd5/046/15041046/vendor/composer/../laravel/framework/src/Illuminate/Foundation/Http/Events/RequestHandled.php): failed to open stream: No such file or directory

I really appreciate if anyone can help me, and forgive my bad English

here’s my website address

That file you mentioned does it exist in that location the script is trying to communicate to ?