How to write the path in PHPExcel correctly?

Question

PHP

Good day, there is a code for importing data from excel to the mysql database, when I immediately write the name of the excel file itself, then the import occurs without errors, and if I start specifying the path through the file selection (input = "file"), it gives an error.

<form class="" action="" method="post">
     <input type="file" name="file_path" value="">
     <button type="submit" name='import_b'>Импортировать</button>
</form>

<?php

     if (isset($_POST['import_b'])) {
       include "Classes/PHPExcel/IOFactory.php";
       $file_path = $_FILES['file_path']['tmp_name'];

       $objPHPExcel = PHPExcel_IOFactory::load($file_path);
       foreach ($objPHPExcel->getWorksheetIterator() as $worksheet)
       {
         $highestRow = $worksheet->getHighestRow();
         for ($row = 2; $row <= $highestRow; ++ $row)
         {
           $name = $worksheet->getCellByColumnAndRow(0, $row);
           $name_noSpace = $worksheet->getCellByColumnAndRow(0, $row);
           $nameScore = $worksheet->getCellByColumnAndRow(1, $row);
           $no_str_name = str_replace(' ','',$name_noSpace);

           $result_set = mysqli_query($connect, "SELECT `name`, `nameScore` FROM `test_excel` WHERE `name` = '$name' AND `nameScore` = '$nameScore' ");
           $present_in = mysqli_fetch_row($result_set);
           if(isset($present_in["0"]) && $nameScore == $present_in['1']){
             echo "";
           }
           else{
             $result = mysqli_query($connect, "INSERT INTO `test_excel`(name, nameScore, noSpaceName) VALUES ('$name', '$nameScore', '$no_str_name')") or die('Ошибка чтения записи:'.mysqli_error());
           }
         }
       }
     }
?>