Warning: file_get_contents(): https:// wrapper is disabled in the server configuration by all

First, check your PHP file with this code and then enable the fopen in your php.ini file

<?php 
if( ini_get('allow_url_fopen') ) {
    die('allow_url_fopen is enabled. file_get_contents should work well');
} else {
    die('allow_url_fopen is disabled. file_get_contents would not work');
}

?>

Edit the php.ini file and enable using below code

allow_url_fopen = 1 //0 for Off and 1 for On Flag
allow_url_include = 1 //0 for Off and 1 for On Flag

1. Login to your Cpanel
2. Under Software click on MultiPHP INI Editor demo
3. Click on Editor Mode and select Domain demo
4. Paste allow_url_fopen = 1 and save

This solution worked for me as I couldn't access the php.ini file.

I added this function:

function curl_get_file_contents($URL)
{
    $c = curl_init();
    curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($c, CURLOPT_URL, $URL);
    $contents = curl_exec($c);
    curl_close($c);

    if ($contents) return $contents;
    else return FALSE;
}

and use it instead of

file_get_contents($url)

and it worked.

The solution is better explained here, all credits to the creator of the post.