WooCommerce troubleshooting for 403, 404, 500, 503, 504, 524, and thumbnail errors

403 / 404 errors

When you try to sync designs to your store and the sync fails, you may see the message below on the page "Store" -> "Synced designs":

"HTTP request returned status code 403"

This usually happens because your hosting provider prevents popcustoms.com from making requests to your store. To solve the problem, add our IP address 47.89.194.2 to the IP whitelist of Mod_Security or other security software. If you do not know where to find the IP whitelist, please contact your hosting provider for help.

For Cloudflare users, you can follow the picture below.

Once the IP is added to the whitelist, click "Retry". If the error still persists, continue reading and contact us with the information mentioned below.

500 / 503 / 504 / 524 errors

If you sync designs to your WooCommerce store and the sync fails, you may see an error such as "There Has Been a Critical Error on Your Website" or another 5xx error.

To solve the problem, go to your WordPress Dashboard -> WooCommerce -> Status -> System status -> Get system report -> Copy for support. Copy the information and provide it to us.

Then go to WooCommerce -> Status -> Logs, find the latest fatal-errors-2023-xx-xx log, copy it, and provide it to us.

Contact us at service@popcustoms.com with the information above. Our IT support team and POP x WooCommerce project team members will help solve the problem as soon as possible.

Class-wp-image-editor / fatal error

When this error appears, it means there is a problem generating product thumbnails. Because of the execution time limit of your system, the product thumbnails cannot be generated within the allowed time. In this case, there are three solutions:

1. Disable some thumbnail sizes with this plugin: https://wordpress.org/plugins/disable-generate-thumbnails/. This may help speed up generation.

2. Extend the execution time limit of your system. Try this plugin: https://wordpress.org/plugins/wp-maximum-upload-file-size/. It may help extend the limit to 600 seconds.

3. Use the Publish feature instead of the Sync feature to send products to your WooCommerce store, so you can select only 2-3 mockups and reduce generation time.

"Out of Stock" and no variations error

This error happens because we provide too many mockup pictures and WooCommerce cannot handle all of them. In this case, please follow the steps below:

1. Go to Dashboard -> Stores on POPCUSTOMS, find your connected WooCommerce store, click Synced designs, find the product that failed to display correctly in your storefront, and delete it.

2. Log in to WooCommerce and delete the same product from your store. Then go to Trash and permanently delete it.

3. Go back to POPCUSTOMS and publish the product to your WooCommerce store again. Please remember to delete some mockups in the final step so the sync can succeed. Use the Publish button instead of the Sync to stores button, and we do not suggest syncing them in bulk.

To avoid this issue, always use our Publish button to sync products to your WooCommerce store. At the same time, we suggest choosing 3 or fewer mockups in the final step during publishing.

Thanks.