It looks like you're encountering a PHP error related to data type issues in your WordPress setup. This could be due to a plugin or theme conflict, or an issue with the data being processed.
Here’s a quick fix:
Disable Plugins: Temporarily deactivate all plugins to see if the error resolves. If it does, reactivate them one by one to identify the culprit.
Switch Themes: Change your theme to a default WordPress theme to rule out theme-related issues.
Update PHP: Ensure your PHP version is compatible with your WordPress version.
Check for Updates: Make sure WordPress, themes, and plugins are all updated to their latest versions.
If these steps don't resolve the issue, you might want to consult a website developer for more in-depth assistance.
Hope this helps!