Title: PHP warnings email-encoder-bundle/src/Validate/Filters.php:420
Last modified: June 4, 2026

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# PHP warnings email-encoder-bundle/src/Validate/Filters.php:420

 *  [p1c2d3](https://wordpress.org/support/users/postcd/)
 * (@postcd)
 * [4 days, 5 hours ago](https://wordpress.org/support/topic/php-warnings-email-encoder-bundle-src-validate-filters-php420/)
 * Hello, having WP 7 and Email encoder 2.5.0, i have enabled “Full protection”,“
   Automatic” and using free HivePress plugin with its default free theme + Query
   monitor plugin. This plugin allows me to see queries when i am logged-in as admin,
   there is a top bar button to show kind of dev. console.
 * This console has errors tab where appears tens of warnings related to Email encoder.
   [Video here](https://drive.proton.me/urls/869F3832YC#XiwfsH1f0g61).
 * All warnings in a text form: [https://justpaste.it/ktk45](https://justpaste.it/ktk45)
 * One of the warnings i am pasting there:
 * DOMDocument::loadHTML(): Tag defs invalid in Entity, line: 210
    1.  wp-content/plugins/email-encoder-bundle/src/Validate/Filters.php:420
    2.  `OnlineOptimisation\EmailEncoderBundle\Validate\Filters->filter_soft_dom_attributes()`
        
        wp-content/plugins/email-encoder-bundle/src/Validate/Filters.php:420
    3.  `OnlineOptimisation\EmailEncoderBundle\Validate\Filters->filter_page()`
        wp-
        content/plugins/email-encoder-bundle/src/Validate/Filters.php:38
    4.  `OnlineOptimisation\EmailEncoderBundle\Front\FrontCore->filterPage()`
        wp-content/
        plugins/email-encoder-bundle/src/Traits/PluginHelper.php:143
    5.  `OnlineOptimisation\EmailEncoderBundle\Front\FrontCore->filter_page()`
        wp-content/
        plugins/email-encoder-bundle/src/Front/FrontCore.php:110
    6.  `apply_filters('final_output')`
        wp-content/plugins/email-encoder-bundle/src/
        Front/FrontBuffering.php:62
    7.  `OnlineOptimisation\EmailEncoderBundle\Front\FrontBuffering->apply_content_filter()`
        
        wp-content/plugins/email-encoder-bundle/src/Front/FrontBuffering.php:62
    8.  `ob_end_flush()`
    9.  `wp_ob_end_flush_all()`
        wp-includes/functions.php:5493
    10. `do_action('shutdown')`
        wp-includes/load.php:1308
    11. `shutdown_action_hook()`
        wp-includes/load.php:1308
 * Please if possible tell me what to search and what to replace in which file if
   you want to test a fix or send me updated plugin file.
 * List of active plugins is at [https://justpaste.it/jn2p6](https://justpaste.it/jn2p6)

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 * 0 replies
 * 1 participant
 * Last reply from: [p1c2d3](https://wordpress.org/support/users/postcd/)
 * Last activity: [4 days, 5 hours ago](https://wordpress.org/support/topic/php-warnings-email-encoder-bundle-src-validate-filters-php420/)
 * Status: not resolved