Connect SendGrid for Emails

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

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

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$_GET['page'] not unslashed before sanitization. Use wp_unslash() or similar

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

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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.

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Hook names invoked by a theme/plugin should start with the theme/plugin prefix. Found: "pre_wp_mail".

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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.

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wp_redirect() found. Using wp_safe_redirect(), along with the "allowed_redirect_hosts" filter if needed, can help avoid any chances of malicious redirects within code. It is also important to remember to call exit() after a redirect so that no other unwanted code is executed.

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The upgrade notice for "1.10.9" exceeds the limit of 300 characters.

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