Title: Fatal error: Uncaught Error: Failed opening required
Last modified: August 3, 2026

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# Fatal error: Uncaught Error: Failed opening required

 *  [guilem](https://wordpress.org/support/users/guilem/)
 * (@guilem)
 * [4 days, 10 hours ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-failed-opening-required-3/)
 * Podem me ajudar com esse error:
   **Warning**: require_once(/home1/ampara16/public_html/
   wp-includes/PHPMailer/PHPMailer.php): Failed to open stream: No such file or 
   directory in **/home1/ampara16/public_html/wp-content/plugins/wp-mail-smtp/src/
   Core.php** on line **890**
 * **Fatal error**: Uncaught Error: Failed opening required ‘/home1/ampara16/public_html/
   wp-includes/PHPMailer/PHPMailer.php’ (include_path=’.:/opt/cpanel/ea-php82/root/
   usr/share/pear’) in /home1/ampara16/public_html/wp-content/plugins/wp-mail-smtp/
   src/Core.php:890 Stack trace: #0 /home1/ampara16/public_html/wp-content/plugins/
   wp-mail-smtp/src/Core.php(633): WPMailSMTP\Core->generate_mail_catcher(true) #
   1 /home1/ampara16/public_html/wp-content/plugins/wp-mail-smtp/src/Core.php(618):
   WPMailSMTP\Core->replace_w_fake_phpmailer(NULL) #2 /home1/ampara16/public_html/
   wp-includes/class-wp-hook.php(341): WPMailSMTP\Core->replace_phpmailer(”) #3 /
   home1/ampara16/public_html/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters(
   Object(WPMailSMTP\Processor), Array) #4 /home1/ampara16/public_html/wp-includes/
   plugin.php(522): WP_Hook->do_action(Array) #5 /home1/ampara16/public_html/wp-
   settings.php(622): do_action(‘plugins_loaded’) #6 /home1/ampara16/public_html/
   wp-config.php(96): require_once(‘/home1/ampara16…’) #7 /home1/ampara16/public_html/
   wp-load.php(50): require_once(‘/home1/ampara16…’) #8 /home1/ampara16/public_html/
   wp-admin/admin.php(35): require_once(‘/home1/ampara16…’) #9 /home1/ampara16/public_html/
   wp-admin/plugins.php(10): require_once(‘/home1/ampara16…’) #10 {main} thrown 
   in **/home1/ampara16/public_html/wp-content/plugins/wp-mail-smtp/src/Core.php**
   on line **890**
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ffatal-error-uncaught-error-failed-opening-required-3%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Plugin Support [Jaime Segura](https://wordpress.org/support/users/jaimeimagely/)
 * (@jaimeimagely)
 * [2 days, 13 hours ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-failed-opening-required-3/#post-18985181)
 * Hi [@guilem](https://wordpress.org/support/users/guilem/)
 * From I can see, it seems your WordPress install is missing a file, that is wp-
   includes/PHPMailer/PHPMailer.php, WP Mail SMTP is triggering the error when trying
   to access the file.
 * I recommend you reach out to your hosting provider and share the error with them,
   they should be able to refresh your WordPress core files and restablish the PHPMailer.
   php file and its functionality.
 * Let me know how it went.
 * Thanks

Viewing 1 replies (of 1 total)

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 * 1 reply
 * 2 participants
 * Last reply from: [Jaime Segura](https://wordpress.org/support/users/jaimeimagely/)
 * Last activity: [2 days, 13 hours ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-failed-opening-required-3/#post-18985181)
 * Status: not resolved