PHP Fatal Error after recent update – Call to undefined function __()

Hi Scott,

The function __() is a translation function that’s built into WordPress; can you determine when this error is taking place or what page is being accessed?

Feel free to change this line as follows:

$aioseop_plugin_name = 'All in One SEO Pack';

Hi Peter,

I know what the function is…I’m a plugin author myself. ?? I’m just giving you the error from the logs. There unfortunately isn’t more info available.

There error occurred after the recent update where you guys moved that line from its previous location. I’m guessing it’s declared too early in the WP process now…before that function is defined in WordPress.

Changing the line is possible, but the next version would overwrite it, so that’s not a long-term solution. I never occurred before the recent update, and I’ve used the plugin for a long time. I’d advise doing some testing, and re-evaluating that change you guys made, as it’s likely I’m not the only one experiencing it.

I can get in touch with you guys privately by email if you need more specifics.

– Scott

Hi Scott,

As a plugin developer, I imagine you know that this is a pretty unusual error to encounter, then. __() is defined in wp-includes/l10n.php which gets included pretty early in wp-settings.php and well before any plugins get loaded. Is it possible that the plugin file is getting run directly outside of WordPress, for some reason? If so, you might want to prevent that from happening at the webserver level.

Hi Peter,

Yes, it definitely is unusual, and has never happened before with any plugin I’ve used or written. The plugin file is definitely not getting included outside of WordPress. Everything is set up correctly on our sites, including all the server configurations. Yes, I understand where __() is defined…I haven’t looked fully into the code changes you guys implemented, I just took a cursory look and noticed that the location of that line had changed with the recent plugin update, at the same time the errors started, and that the error logs were reporting that line was the source of the error. I just wanted to report it to you guys so you’re aware of the error.

Thanks Scott, I’ll test this further and see if I can reproduce this issue.

I am having the same issue – for days and I am not a developer. All I know is I deactivated ALL plugins except this and that’s how I found it. It appeared when clicking on my jobs and/or resumes. I don’t know how to fix so I am left waiting for a fix or find a new SEO plugin – and I like this one. But, I need it to work.

Fatal error: ob_end_flush(): Cannot use output buffering in output buffering display handlers in /home/vetmedca/public_html/specialties/wp-includes/functions.php on line 3269

TY

Hi Bellatee,

First, try deleting and reinstalling the plugin from the WordPress plugin repository; second, there is an option under All in One SEO -> Performance for Force Rewrites, set this to Disabled and click Update Options.

Awww…you’re the best! Thanks so much for the reply & assistance. Very much appreciated. Happy New Year!