Upgrade issue

Hello,

I had a serious technical issue with the plugin after updating from version 2.20.0 to a later version.

After the update, my Google Merchant Center XML feed became empty. Google Merchant Center reported that the feed had no products anymore. I also tried regenerating the XML feed from WooCommerce, but the plugin could not find any products.

I downgraded the plugin to version 2.20.0, and that solved the issue: the XML feed was generated again with products.

This morning, I updated the plugin again to the latest version. The XML feed now seems to be working and contains products, prices, stock status, GTINs, etc.

However, I now have another issue: I cannot edit or map the feed content anymore. The mapping/cartography screen is empty.

So currently:

• The XML feed seems to generate correctly.
• Products are present in the feed.
• But the feed mapping/content configuration screen is blank.
• I cannot modify the feed fields or mapping.

Previously, I also saw this JavaScript error in the browser console:

Uncaught TypeError: can't access property "toString", _feedHolder.channel is nullwppfm_fillFeedFields/wp-content/plugins/wp-product-feed-manager/includes/user-interface/js/wppfm_feed-form.min.js?ver=fr-2.23.4

Could this be related to a migration issue from feeds created before version 2.20.0?

Can you please confirm how I can repair the existing feed configuration without deleting and recreating everything?

Thank you.