Fatal Error in Init.php, the entire site was blank, admin as well

I had an issue with the plugin and my Multisite. I don’t think you can add/concatenate arrays together like in the example below in BOLD

I had to edit init.php to resolve this issue. I just commented out the return part for now. I do not know what the full impact will be from this edit but it seems to be working okay now. I have been running version 2.2 for years and finally decided to figure out why I could not upgrade.

Here is the error message:
Fatal error: Unsupported operand types in /home/blogsite/public_html/wp-content/plugins/wordpress-23-related-posts-plugin/init.php on line 119

function wp_rp_get_platform_options() {
$options = wp_rp_get_options();

$thumb_options = array(‘custom_size_thumbnail_enabled’ => false);

if (!empty($options[‘custom_size_thumbnail_enabled’])) {
$thumb_options[‘custom_size_thumbnail_enabled’] = $options[‘custom_size_thumbnail_enabled’];
$thumb_options[‘custom_thumbnail_width’] = $options[‘custom_thumbnail_width’];
$thumb_options[‘custom_thumbnail_height’] = $options[‘custom_thumbnail_height’];
}
//return $options[‘desktop’] + $thumb_options;
}

https://wordpress.org/plugins/wordpress-23-related-posts-plugin/