Critical error: WooCommerce

Hi there!

I visited your site and it seems OK?

If the issue persists perhaps on the admin side, you might need to re-upload the plugin you were trying to update. It’s possible that at the time the error happened the plugin was either not finished updating, or didn’t update completely.

If you can’t get into WP Admin, you can access your site via an FTP app, or via your host’s file manager. You can then upload and overwrite the existing plugin with a new copy of it, which should resolve the issue.

If the email itself doesn’t tell you which plugin is in play, refer to your hosting account’s error log for more info, and share that here.

When updating your site, be sure to follow these best practices, so that should something like this happen, you have a backup.

• This reply was modified 3 years, 10 months ago by EastOfWest a11n.

I updated the WooCommerce plug-in 4.9.0.
The site is up again now, so maybe someone fixed an error. We`ll see. Thanks for the reply!

A site I manage that has WC installed, but not yet live, also had issues with the 4.9.0 update. Gave a critical error (on just the plugin) and refused to reactivate WC.

It seems that reactivating it manually got past whatever the issue was – a glitch on reactivation?

No shipping cost is being added to orders on my site, so there is still problems.
I use the Flexible Shipping plug-in.

• This reply was modified 3 years, 10 months ago by sveilore.

Hi @sveilore –

It sounds like another of your plugins or your theme may be conflicting with WooCommerce. You can read more about plugin and theme conflicts in our Self-Service Guide.

Here’s how you can figure out which one may be causing the problem:

Before you start

• First, please make sure you have a good backup in place of your full site and database. Most hosting companies have this included in the subscription, but you could also consider using a service like Jetpack. If something goes wrong, it’s nice to know that you can restore your site.
• Second, I would suggest to install a plugin called Health Check & Troubleshooting. This is a plugin developed by the WordPress community and it allows you to disable plugins without effecting your current site visitors.

How to test for conflicts
In order to test for conflicts using Health Check & Troubleshooting:

1. Go to Tools > Site Health > Troubleshooting.
2. Select Enable Troubleshooting Mode. This will disable all your plugins and set your theme to a default one.
3. Go to Plugins. There you can enable WooCommerce by selecting Enable While Troubleshooting.
4. Try to reproduce the problem. If the problem is resolved, it’s clearly a conflict. Now we need to figure out which plugin is causing this conflict.
5. If you can’t reproduce the problem with only WooCommerce enabled, go ahead and re-enable the other plugins one by one. Test after each one until the problem occurs again – this will tell you which plugin is conflicting.
6. If you are unable to reproduce the problem with the rest of your plugins enabled it could be your theme causing the conflict. To test for this, please enable your original theme at your WordPress Dashboard in the Troubleshooting Mode section at the top (it will look similar to this: https://d.pr/i/bbvkLY). In the Troubleshooting window, you’ll be able to see a dropdown with available themes. Choose the one you normally use. Try reproducing the problem you’re experiencing. If you can reproduce it, your theme is the source of the conflict.

Once you’ve done that, please check out How to test for plugin and theme conflicts and follow the steps there. Please let us know how that goes.

We haven’t heard back from you in a while, so I’m going to go ahead and mark this thread as resolved. If you have any other questions please feel free to start a new thread.