500 Internal Server Error in Laravel query error when i die dump the data appears but the console show ther error

 $shipments =DB::table('users')
    ->select('users.fname')
    //  ->where('invnum.doctype','=',5)
    //  ->where('invnum.docstate','=',4)
   
    
     ->get();

     dd($shipments);

i have an issue with my laravel application which just started abruptly am getting the below error

The data is displays in dd but when i have a query with a lot of data it doesn't and am getting the error i have tried to add cors but the error doent go away what could be the issue the laravel logs shows no error. I understand 500 is not an actual error but the server could not find appropriate response

via Chebli Mohamed