PHP Warnings

Hi there,

when activating Query Monitor with your plugin i get a few notices which i like to share:

1.

Trying to get property 'query_vars' of non-object	1	

wp-includes/template.php:704
load_template('wp-content/plugins/wp-post-comment-rating/inc/admin-setting.php')
wp-content/plugins/wp-post-comment-rating/wpcr-comment-rating.php:99

2. i dont use the social share box (what does it do with this plugin?)

Undefined index: wpcr_social	1	

wp-content/plugins/wp-post-comment-rating/inc/function.php:222
wpcr_add_meta_tags_for_ss()
wp-includes/class-wp-hook.php:288
do_action('wp_head')

3.

Undefined variable: output	36	

wp-content/plugins/wp-post-comment-rating/inc/richschema.php:59
wpcr_rich_snippets()
wp-includes/class-wp-hook.php:288
apply_filters('the_content')

hope that it helps updating the plugin