chat gpt generated plugin for embedding subreddit not working

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I had chat gpt create a piece of code that i uploaded as a plug in into wordpress. the goal is to have my site host an embedded version of my sub. the code seems straight foreward, but when i call the short code, i get a message that it cannot connect to reddit.com . is there some sort of permissions i am not obtaining from reddit or is there an error in the code?

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<?php
/*
Plugin Name: Subreddit Embed
Description: Embeds a subreddit using a link
Version: 1.0
Author: Your Name
*/

// Define the shortcode to use in the post editor
add_shortcode( ‘subreddit’, ’embed_subreddit’ );

// Function that will embed the subreddit
function embed_subreddit( $atts ) {
// Get the link from the shortcode attributes
$link = $atts[‘link’];

// Extract the subreddit name from the link
$subreddit = preg_replace(‘/https?:\/\/(www\.)?reddit.com\/r\//’, ”, $link);

// Build the embed HTML
$html = ‘<iframe src=”https://www.reddit.com/r/’.$subreddit.’/embed” width=”100%” height=”600″ frameborder=”0″></iframe>’;

// Return the embed HTML
return $html;
}

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