Warning: Missing argument 1 for get_category_link()

I’m getting

Warning: Missing argument 1 for get_category_link()

when I try to use get_category_link in an array.

<?php

/*
Plugin Name: Category Function
Plugin URI: https://www.ihowd.com
Description: This plugin expand category functions by adding expanding, collapsing and folding functionaility.
Version: 1
Author: Muhammad Haris
Author URI: https://www.mharis.net
*/

function catfunc()
{
	global $wpdb;
	$tp = $wpdb->prefix;

	if(!isset($iIDcount))
	{
		$iIDcount = 1;
	}

	$aCategoryName = $wpdb->get_results("SELECT term_id, name FROM {$tp}terms ORDER BY name");	

	foreach($aCategoryName as $szCategories)
	{
		$aResult[$iIDcount] = array('id' => $szCategories->term_id, 'name' => $szCategories->name, 'url' => get_category_link($szCategories->term_id));
		$iIDcount++;
	}

	$aPosts = $wpdb->get_results("SELECT {$tp}posts.id AS <code>id</code>, {$tp}posts.post_title AS <code>title</code>, {$tp}term_relationships.term_taxonomy_id as <code>catID</code>
									FROM {$tp}posts, {$tp}term_relationships
									WHERE {$tp}term_relationships.object_id = {$tp}posts.id AND
									{$tp}posts.post_status = 'publish' AND
									{$tp}posts.post_type = 'post'
									ORDER BY {$tp}posts.post_date DESC");

	foreach($aPosts as $szPosts)
	{
		$aResult[$iIDcount] = array('post_id' => $szPosts->id, 'post_title' => $szPosts->title, 'cat_id' => $szPosts->catID, 'url' => $szPosts->id);
		$iIDcount++;
	}

	return $aResult;
}

echo '<pre>'	.	print_r(catfunc(), 1)	.	'</pre>';

?>

What am I doing wrong?