Customer List Blank

Hi @bgillingham,

Thanks for sharing those and your systems report! The error TypeError: t(...)(...).tz is not a function suggests there’s likely a conflict with timezone-related JavaScript functionality.

Out of curiosity, when exactly does this error occur? Is it when accessing the WooCommerce admin dashboard, specific WooCommerce pages, or throughout the entire site?

Looking at your setup, I notice you have WP Rocket (a caching plugin) installed but inactive, and there’s an advanced-cache.php file present, which suggests caching is still active. The timezone-related JavaScript error often occurs when cached JavaScript files conflict with WooCommerce’s date/time functions.

Here are the steps I’d recommend:

1. Even though WP Rocket appears inactive, the advanced-cache.php file suggests caching is still running. Clear any server-level or CDN caching as well.
2. With 40 active plugins, there’s a good chance of conflicts. Try temporarily deactivating plugins in groups to isolate the issue, starting with any that might handle dates/times or JavaScript optimization.
3. Your system report shows the cart page is missing the proper WooCommerce shortcode, which could be related to the JavaScript errors. Try troubleshooting for JavaScript errors.

I hope that helps. Let us know how that goes!

Hi there,

Thank you for the update and for sharing these details.

Since you mentioned the issue started after recently updating your plugins and theme, I’m suspecting there may be a compatibility conflict with the latest version of WooCommerce. Even without adding new plugins, updates can sometimes introduce conflicts between existing plugins, themes, and WooCommerce.

I understand you have already disabled many plugins, but to properly identify the cause, you’ll need to run a full conflict test. Please try the following:

• Deactivate all plugins except WooCommerce.
• Temporarily switch to a default WordPress theme such as Twenty Twenty-Five.
• Then check whether:
  • Accessing WooCommerce from the left menu works correctly
  • The Customers page loads instead of showing a blank screen

If the issue no longer occurs, this confirms a plugin or theme conflict. You can then reactivate plugins one at a time until the issue returns, which will help identify exactly which one is causing the problem.

Since this is a live production site, I recommend performing the conflict test on a staging site so your live store remains unaffected. You can create a staging site using your hosting provider’s staging feature or by using a staging plugin.https://ww.wp.xz.cn/plugins/wp-staging/

You can follow this guide for detailed steps:
https://woocommerce.com/document/how-to-test-for-conflicts/

Please let us know the results after testing especially whether the issue still happens with only WooCommerce active and a default theme enabled and we’ll continue assisting from there.

Hi there,

Thank you for the update. Are you using the plugin available here: Sales Agent For WooCommerce?

If so, I’d recommend creating a support ticket directly with the plugin developers here: https://woocommerce.com/my-account/contact-support/?select=sales-agent-for-woocommerce#contact-us

They will be able to help troubleshoot the issue and provide a fix.

Before you go, If you found WooCommerce helpful in setting up your store, we would really appreciate it if you could leave a five-star review here: https://ww.wp.xz.cn/support/plugin/woocommerce/reviews/#new-post. Your feedback helps us improve and lets other users know how WooCommerce can support their business.