Fast_Chekcout

[Vicente Sendra LLopis]

I have allways this error and i can´t continue with the chekcout. The instalation is in local with Laragon. This instalacion is a fresh instalacion (sorry for my english):

2025-09-26 8:19:18 - load error: AbanteCart core v.1.4.2.1 Error: Could not load model extension/default_flat_rate_shipping
Trace:
#0 E:\laragon\www\abante\core\engine\controller.php:259
#1 E:\laragon\www\abante\storefront\controller\responses\checkout\pay.php:1789
#2 E:\laragon\www\abante\storefront\controller\responses\checkout\pay.php:361
#3 E:\laragon\www\abante\storefront\controller\responses\checkout\pay.php:1450
#4 E:\laragon\www\abante\core\engine\dispatcher.php:308
#5 E:\laragon\www\abante\core\engine\response.php:87
#6 E:\laragon\www\abante\core\engine\router.php:222
#7 E:\laragon\www\abante\core\engine\router.php:86
#8 E:\laragon\www\abante\index.php:95
in E:\laragon\www\abante\core\engine\loader.php on line 126

Thank you for your help

[Basara]

Hello.
This issue may occur on Windows systems. The error is related to how models are loaded on that version under Windows.

You need to use AbanteCart 1.4.3 or later. You can download the patched version here which still in developement:
https://github.com/abantecart/abantecart-src/archive/refs/heads/1.4.3.zip

[Vicente Sendra LLopis]

Hello.
This issue may occur on Windows systems. The error is related to how models are loaded on that version under Windows.

You need to use AbanteCart 1.4.3 or later. You can download the patched version here which still in developement:
https://github.com/abantecart/abantecart-src/archive/refs/heads/1.4.3.zip

I am ussing Windows 11 Pro. I'm going to try this version 1.4.3
Thank You

[Vicente Sendra LLopis]

Hello again.
It works perfectly now.
I'd like to add that I like this version much better than the one I was using.

[safdriyaquranacademy]

1. Check if the extension exists

Go to your AbanteCart installation folder:
E:\laragon\www\abante\extensions\

Make sure you see a folder called default_flat_rate_shipping.
If it's missing, copy it from a fresh AbanteCart package of the same version (1.4.2.1).

2. Enable the extension in admin

Log in to Admin Panel.

Go to: Extensions → Shipping.

Find Flat Rate Shipping and make sure it's installed and enabled.

If it's not visible, the files are missing (back to step 1).

3. Clear AbanteCart cache

In admin, go to System → Cache → Clear All.

Also, manually delete everything in /system/cache/ except for index.html.

4. Reset settings if needed

Sometimes the database doesn't have the default config rows for shipping.

In phpMyAdmin, check the table ac_extensions.

Ensure there's an entry for default_flat_rate_shipping.

If not, reinstall the extension from admin or re-import it manually.

5. Debugging tip

If you're still stuck, enable error reporting in system/config.php:

define('DEBUG', 1);


Then reload checkout — it may show which file is missing exactly.

In short: make sure the default_flat_rate_shipping folder exists, enable it in admin, and clear cache. That usually fixes the "Could not load model extension/default_flat_rate_shipping" error on fresh installs.