What

When requesting nutriments field on text search API v1, the resposne is HTTP 500 with this body:
Software error:
Not a reference at /opt/product-opener/lib/ProductOpener/API.pm line 1023.
For help, please send mail to the webmaster (contact@openfoodfacts.net), giving this error message and the time and date of the error.

Steps to reproduce the behavior

1. Go to

https://world.openfoodfacts.net/cgi/search.pl?json=1&search_simple=1&search_terms=cola&fields=code,product_name,product_name_en,product_name_de,abbreviated_product_name,abbreviated_product_name_en,abbreviated_product_name_de,generic_name,generic_name_en,generic_name_de,brands_tags,quantity,product_quantity,product_quantity_unit,serving_size,serving_quantity,serving_quantity_unit,nutrition_data_per,lang,nutriments.energy,nutriments.energy_100g,nutriments.carbohydrates,nutriments.carbohydrates_100g,nutriments.sugars,nutriments.sugars_100g,nutriments.fat,nutriments.fat_100g,nutriments.saturated-fat,nutriments.saturated-fat_100g,nutriments.proteins,nutriments.proteins_100g,nutriments.salt,nutriments.salt_100g&page=1&page_size=100

A few days ago this worked.

This request still works:

https://world.openfoodfacts.net/cgi/search.pl?json=1&search_simple=1&search_terms=cola&fields=code,product_name,product_name_en,product_name_de,abbreviated_product_name,abbreviated_product_name_en,abbreviated_product_name_de,generic_name,generic_name_en,generic_name_de,brands_tags,quantity,product_quantity,product_quantity_unit,serving_size,serving_quantity,serving_quantity_unit,nutrition_data_per,lang&page=1&page_size=100

Expected behavior

The result of request 1 should be similar to request 2 and not result in an error.

Type of device

I am using this API in a Flutter app with Flutter 3.38.9 and Android 16 on the emulator and on my real device, a Pixel 7 Pro.
Also by accessing the API via Chrome Browser Version 145.0.7632.76 the problem exists.