It seems to be a compatibility issue with the WPML and WooGraphQL plugin. It's not officially compatible with WPML, so some conflicts can occur.
The problem comes from how product types are handled in the GraphQL schema, when WPML is active, the product model gets treated like a regular post, which causes issues.
You may reach out to the plugin author and suggest joining our compatibility program. On our end, we’ve already escalated this as a feature request for a future WPML GraphQL update, but it may take some time and we don’t have any ETA.
As a workaround, you can try using the standard post schema to fetch product data and translations, which may avoid the conflict.
