Twenty20 Image Before-After

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Mismatched text domain. Expected 'twenty20' but got 'elementor-addon'.

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

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PHP file should prevent direct access. Add a check like: if ( ! defined( 'ABSPATH' ) ) exit;

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Classes declared by a theme/plugin should start with the theme/plugin prefix. Found: "Elementor_Hello_World_Widget_1".

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Global constants defined by a theme/plugin should start with the theme/plugin prefix. Found: "ZB_T20_DOMAIN".

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Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "add_twenty20_shortcode_button".

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Global variables defined by a theme/plugin should start with the theme/plugin prefix. Found: "$file".

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load_plugin_textdomain() has been discouraged since WordPress version 4.6. When your plugin is hosted on WordPress.org, you no longer need to manually include this function call for translations under your plugin slug. WordPress will automatically load the translations for you as needed.

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

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Version parameter is not explicitly set or has been set to an equivalent of "false" for wp_enqueue_script; This means that the WordPress core version will be used which is not recommended for plugin or theme development.