1. Log into your Internic.ca Control Panel.
2. Select WordPress from the left-hand navigation menu.
3. Under the Tools section, locate Debugging and toggle the switch to On.
4. Refresh your website in a web browser to view the generated error on your screen.

1. Inside your Internic Control Panel, click on Logs (or Dashboard > Logs).
2. Filter or scroll through the real-time log entries to locate recent PHP Fatal error entries.

Scenario A: Single Broken Plugin (e.g., Caching or Utility Plugins)

2026-08-28 13:53:10 Error 72.138.80.242 AH01071: Got error 'PHP message: PHP Fatal error: Uncaught TypeError: substr(): Argument #1 ($string) must be of type string, int given in /data/vhosts/example.com/httpdocs/wp-content/plugins/wp-rocket/inc/ThirdParty/Plugins/CDN/Cloudflare.php:562
Stack trace:
#0 /data/vhosts/example.com/httpdocs/wp-content/plugins/wp-rocket/inc/ThirdParty/Plugins/CDN/Cloudflare.php(562): substr()
#1 /data/vhosts/example.com/httpdocs/wp-content/plugins/wp-rocket/inc/ThirdParty/Plugins/CDN/Cloudflare.php(535): WP_Rocket\ThirdParty\Plugins\CDN\Cloudflare->unregister_callback()
#2 /data/vhosts/example.com/httpdocs/wp-includes/class-wp-hook.php(353): WP_Rocket\ThirdParty\Plugins\CDN\Cloudflare->unregister_cloudflare_clean_on_post()
...
thrown in /data/vhosts/example.com/httpdocs/wp-content/plugins/wp-rocket/inc/ThirdParty/Plugins/CDN/Cloudflare.php on line 562', referer: https://canada2.internic.ca:8443/

• Cause: A specific plugin encountered a bug following a system or core update. Looking at the file path inside the stack trace (/wp-content/plugins/wp-rocket/...), we can confirm the caching plugin triggered the error.
   
• Fix:
  1. Open Plesk File Manager and go to /wp-content/plugins/.
  2. Locate the broken plugin folder (e.g., wp-rocket) and rename it by adding _OFF (e.g., wp-rocket_OFF).
  3. Refresh your website to confirm access is restored.
  4. Log into /wp-admin, update the plugin to the latest version, and remove _OFF from the folder name to reactivate it.

Scenario B: Version Mismatch (e.g., Core Elementor vs. Elementor Pro)

2026-08-28 13:55:58 Error 134.195.196.134 AH01071: Got error 'PHP message: PHP Fatal error: Access level to ElementorPro\Modules\ThemeBuilder\Documents\Theme_Document::get_create_url() must be public (as in class Elementor\Core\Base\Document) in /data/vhosts/example.com/httpdocs/wp-content/plugins/elementor-pro/modules/theme-builder/documents/theme-document.php on line 123', referer: https://canada2.internic.ca:8443/

• Cause: A free base plugin (like core Elementor) was updated, but its premium add-on (Elementor Pro) remains on an older version, creating a code incompatibility where class access rules no longer match (public vs. protected).

   

• Fix:
  1. Access your WordPress Admin (/wp-admin) or File Manager.
  2. If the dashboard is accessible, navigate to Plugins > Installed Plugins and update the premium add-on (Elementor Pro) to match the core plugin version.
  3. If automatic updates are unavailable, download the latest .zip package directly from your vendor account (e.g., Elementor.com) and upload/overwrite the plugin folder in File Manager.

Scenario C: PHP Version Conflict & Syntax Errors

2026-08-28 13:53:10 Error 72.138.80.242 AH01071: Got error 'PHP message: PHP Parse error: syntax error, unexpected 'string' (T_STRING), expecting function (T_FUNCTION) or const (T_CONST) in /data/vhosts/example.com/httpdocs/wp-content/plugins/header-footer-elementor/inc/class-hfe-update.php on line 32', referer: https://canada2.internic.ca:8443/
2026-08-28 13:59:01 Warning 72.138.80.242 AH01071: Got error 'PHP message: PHP Deprecated: Creation of dynamic property PowerpackElementsLite\Classes\PP_Elements_WPML::$type is deprecated in /data/vhosts/example.com/httpdocs/wp-content/plugins/powerpack-lite-for-elementor/classes/class-pp-wpml.php on line 8', referer: https://canada2.internic.ca:8443/

• Cause: The domain is running a newer PHP version (e.g., PHP 8.2 or 8.3) than your active theme or plugins support, leading to PHP Parse error or PHP Deprecated notices.

   

• Fix:
  1. In Plesk > PHP Settings for your domain, temporarily lower the PHP handler (e.g., from PHP 8.2/8.3 down to PHP 8.1).
  2. Refresh your site to restore functionality.
  3. Update all installed themes and add-on plugins before upgrading PHP again.
      

1. Once the site is functioning properly and all software is updated, go back to Plesk > WordPress > Tools.
2. Toggle Debugging back to Off so technical error messages are hidden from public view.