Multiple Post Thumbnails

Missing "License" in Plugin Header. Please update your Plugin Header with a valid GPLv2 (or later) compatible license.

The $text parameter must be a single text string literal. Found: $this->label

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$this'.

parse_url() is discouraged because of inconsistency in the output across PHP versions; use wp_parse_url() instead.

A function call to __() with texts containing placeholders was found, but was not accompanied by a "translators:" comment on the line above to clarify the meaning of the placeholders.

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '"<script>var post_id = $post_id;</script>"'.

Simple placeholders should not be quoted in the query string in $wpdb->prepare(). Found: '%s'.

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found 'self'.

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$thumb_id'.

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$post_id'.