Fixing the '_load_textdomain_just_in_time was called incorrectly' Error in Code Snippets

If you're seeing a notice about _load_textdomain_just_in_time being called incorrectly for the 'code-snippets' domain, you're not alone. This is a common issue that appeared after WordPress 6.7.0 introduced new translation loading checks. Let's break down what this error means and how to resolve it.

What Does This Error Mean?

The error message indicates that the Code Snippets plugin (or potentially another plugin or theme) is attempting to load its translations too early in the WordPress loading process. WordPress now expects translation files to be loaded during or after the init action hook. When this happens earlier, it triggers the notice.

Sample Error Message:
Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the code-snippets domain was triggered too early...

Why This Happens

This is typically not an error in your setup, but rather a timing issue within a plugin's code. The Code Snippets team has acknowledged this behavior and is investigating a permanent fix. The error is often more noticeable when using a language other than English in the WordPress admin area, as this triggers the translation loading process.

How to Troubleshoot and Fix the Issue

1. Wait for an Official Plugin Update

Based on community reports, the Code Snippets team is aware of the issue and is working on a patch. The most straightforward solution may be to wait for an official update to the plugin that addresses the translation loading timing.

2. Disable Other Plugins (Conflict Testing)

While the primary issue is with Code Snippets, other plugins can sometimes contribute to the problem. To rule out conflicts:

1. Temporarily disable all other plugins except Code Snippets.
2. Check if the notice disappears.
3. If it does, reactivate your plugins one-by-one to identify which one might be causing a conflict.

3. Check Your Theme

In rare cases, your theme might contain code that affects loading order. Temporarily switch to a default WordPress theme (like Twenty Twenty-Four) to see if the error persists. If it disappears, the issue may lie with your theme.

4. Important: Rule Out Other Plugins

Note from the sample threads that similar errors can reference other text domains (like fullwidth-templates). Carefully check the complete error message. If it mentions a domain other than code-snippets, the issue is likely with a different plugin, and you should focus your troubleshooting there.

Conclusion

This notice is a deprecation warning, not a critical error, and your site should continue to function normally. The most effective resolution will likely come from an update to the Code Snippets plugin itself. In the meantime, you can use the troubleshooting steps above to investigate.