Problem with shortcode attribute

There’s an issue with the “redurl” attribute in the shortcode. Shortcode attributes is passed as an array but you’ve set it as a string. If you set a value in the shortcode, it’s displaying as “Array”.

Current incorrect code:

function wdgk_donation_form_shortcode_html($redurl){ 
  ...
  if (!empty($redurl) && isset($redurl)) {
    $cart_url = $redurl;
  }
}

Here’s an example of how to pass the attributes correctly: https://developer.wordpress.org/plugins/shortcodes/shortcodes-with-parameters/