Convert CSV to JSON

csv-to-json.php

<?php
/*
 * Converts CSV to JSON
 * Example uses Google Spreadsheet CSV feed
 * csvToArray function I think I found on php.net
 */

header('Content-type: application/json');

// Set your CSV feed
$feed = 'https://docs.google.com/spreadsheet/pub?hl=en_US&hl=en_US&key=0Akse3y5kCOR8dEh6cWRYWDVlWmN0TEdfRkZ3dkkzdGc&single=true&gid=0&output=csv';

// Arrays we'll use later
$keys = array();
$newArray = array();

// Function to convert CSV into associative array
function csvToArray($file, $delimiter) { 
  if (($handle = fopen($file, 'r')) !== FALSE) { 
    $i = 0; 
    while (($lineArray = fgetcsv($handle, 4000, $delimiter, '"')) !== FALSE) { 
      for ($j = 0; $j < count($lineArray); $j++) { 
        $arr[$i][$j] = $lineArray[$j]; 
      } 
      $i++; 
    } 
    fclose($handle); 
  } 
  return $arr; 
} 

// Do it
$data = csvToArray($feed, ',');

// Set number of elements (minus 1 because we shift off the first row)
$count = count($data) - 1;
  
//Use first row for names  
$labels = array_shift($data);  

foreach ($labels as $label) {
  $keys[] = $label;
}

// Add Ids, just in case we want them later
$keys[] = 'id';

for ($i = 0; $i < $count; $i++) {
  $data[$i][] = $i;
}
  
// Bring it all together
for ($j = 0; $j < $count; $j++) {
  $d = array_combine($keys, $data[$j]);
  $newArray[$j] = $d;
}

// Print it out as JSON
echo json_encode($newArray);

?>

Hi, Can anyone please help me with this problem of:
Error with Permissions-Policy header: Origin trial controlled feature not enabled: 'interest-cohort'.

API:
https://bhavin-rb.github.io/math_quiz_1/algebra1_api.json

App:
https://bhavin-rb.github.io/algebra1_quiz/

The quiz app works fine from local host and when I published on Github it gave the above error. I made a json file as API and fetching the API that contains the questions and answer options from Github pages. As I said, locally everything is working fine.
Kindly, assist to resolve this problem. Thank you.