wc-ajax=checkout 500

Is your theme using checkout template overrides? You can tell at:
Dashboard > WooCommerce > Status > Template Overrides (right at the bottom of the page)

If so, you are looking at theme code on the checkout page, not WooCommerce code. Do you see any outdated template notices?

Is this your theme:
https://themeforest.net/item/lezada-minimal-creative-woocommerce-wordpress-theme/21949766

If so, the current version is 2.3.1. v2.2.6 at least is needed to support WC 3.6 which you have. Your theme seems to be v1.5, so quite old.

I note your WP version is also several points behind current.

Check that your stripe plugin is the latest. If its this one:
https://en-gb.www.ads-software.com/plugins/woocommerce-gateway-stripe/
you should be using v4.2.3.

I can’t say that updating WP, your theme and plugins will fix the current problem, but its a good thing to try first.

Thanks for the quick answer !

I can see that I have a lot of out dated templates.

Yes, the theme you mentioned is the theme used for my website.
And I see it’s not the current version.
WP is also outdated.

I confirm that I have the last Woocomerce Gateway Strip plugin.

I will make the different updates and I’ll let you know if it fixes the issue

Thank again !

I forgot to precise, the theme is not using the checkout template overrides

The thing is, if updating everything doesn’t work, it gets harder and more tedious to try further debugging steps. So best to try the easy stuff first.

What do you mean by easy stuff first ?
Should I start by the plug in updates first, then the theme, and then WP ?

I should do all that. If you still have the problem you will need to deactivate other plugins, switch to the default theme and put some test orders through. Then reactivate one by one and check to see where it’s going wrong. Takes ages. So update everything first.

Hi @jmamar,

Lorro is correct here – the best approach is to do the following:

– If you have a staging site, do everything on the staging site first. If you do not have one, you can reach out to your Host to create it. A staging site is a copy or clone of the Live site.
– Update WordPress to the latest, then your plugins and theme. You can do this under Dashboard > Updates.
– From there see if it is working. If not, then it might be a plugin or theme conflict. You can read more about plugin and theme conflicts here:

?https://docs.woocommerce.com/document/woocommerce-self-service-guide/

The best way to determine if the issue is being caused by a theme and/or plugin is to do the following:

1. Temporarily switch your theme back to the Storefront or Twenty Seventeen Theme.
2. Disable all plugins except for WooCommerce and Stripe.
3. Test to see if the issue has been resolved.

If that resolves the issue, then one-by-one you can switch back your theme and re-enable your plugins, testing in between, until you find the one causing the conflict/showing the error.

Again, this is best done on a staging site so the Live site is unaffected during this troubleshooting.

Please let us know the results!

Hello @jmamar,

It’s been a while since we heard from you, so I’m marking this thread resolved. Hopefully, you’ve been able to resolve this, but if you haven’t, please let open up a new topic and we’ll be happy to help out.

Cheers