We are currently in the process of upgrading our AbanteCart installation from version 1.4.0 to 1.4.2.

However, during the upgrade process, we encountered the following error:

2025-06-02 13:57:56 - Unknown Error: AbanteCart core v.1.4.1 SQL-ERROR:
"array (
  'error_text' => 'Can\'t DROP \'isgt_lang_definition_idx\'; check that column/key exists',
  'errno' => 1091,
)"
in /core/lib/package_manager.php on line 832

This error suggests that the upgrade script is trying to drop the index isgt_lang_definition_idx, but it does not actually exist in our database. To further investigate, I attempted to manually drop the index using a SQL query, but MySQL returned the same error 1091, confirming that the index is not present in the current schema.

It seems the upgrade script may be assuming the presence of this index without verifying its existence first.

We would greatly appreciate any insights or solutions from the AbanteCart community or developers on the following points:

Is this a known issue in the upgrade process from v1.4.0 or v1.4.1 to v1.4.2?

Any support to help us proceed with a clean and successful upgrade would be sincerely appreciated.

Which is better, WordPress or AbanteCart for e-commerce?           

WordPress offers more flexibility and plugins, while AbanteCart is simpler and built specifically for e-commerce. Choose based on your tech skills and how complex your store needs to be.

With over 6,000 products, it’s not surprising the admin side gets heavy sometimes. One thing I’ve seen help is optimizing your database indexes and making sure you’re not loading too much data at once when editing products. Also, caching some queries or using a separate database server could really ease the load.

Where do I set these permissions?

we are already first platform
And people got our code for free