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

Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "HWPTB_ajax_submit".

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

Resource version not set in call to wp_enqueue_script(). This means new versions of the script may not always be loaded due to browser caching.

In footer ($in_footer) is not set explicitly wp_enqueue_script; It is recommended to load scripts in the footer. Please set this value to `true` to load it in the footer, or explicitly `false` if it should be loaded in the header.

Processing form data without nonce verification.

Detected usage of a possibly undefined superglobal array index: $_POST['ajax_nonce']. Use isset() or empty() to check the index exists before using it

$_POST['ajax_nonce'] not unslashed before sanitization. Use wp_unslash() or similar

Detected usage of a non-sanitized input variable: $_POST['ajax_nonce']

Detected usage of a possibly undefined superglobal array index: $_POST['toolbar_class']. Use isset() or empty() to check the index exists before using it