This page isn’t working xyz.com is currently unable to handle this request.

Fatal error: Uncaught Error: Class “WP_Translation_Controller” not found in /public_html/wp-includes/l10n.php:800
Stack trace: #0 /home/dbpplcom/public_html/wp-includes/l10n.php(957): load_textdomain(‘default’, ‘…’, ‘en_US’) 1 /public_html/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain() 2 [internal function]: WP_Fatal_Error_Handler->handle() 3 {main} thrown in public_html/wp-includes/l10n.php on line 800

Did you recently upgrade any plugin, theme or WordPress core?

Try manually resetting your plugins (no Dashboard access required). If that resolves the issue, reactivate each one individually until you find the cause.

If that does not resolve the issue, access your server via SFTP or FTP, or a file manager in your hosting account’s control panel (consult your hosting provider’s documentation for specifics on these), navigate to /wp-content/themes/ and rename the directory of your currently active theme. Hopefully, this will force the default theme to activate and rule out a theme-specific issue (theme functions can interfere like plugins).

The issue was resolved by the hosting provider. The main root cause was WordPress Core. Thanks for your answers.

Can they share any specific information beyond “The main root cause was WordPress Core”?

Because that just means, according to them, that WordPress was the problem.

Hi James, Yes, the primary reason I received the response was because of WordPress.

Huh, well that’s that not very helpful of them, but I’m glad they fixed something. ??

Yup. Correct. Here’s one more issue, certainly. Please check if you can help me out of this. https://www.ads-software.com/support/topic/contact-form-7-error-23/