How to Count in REST API in v4?

Hi @gorlaz,

I actually changed the code and used the entityServices api instead in the github.

Can you try the following controller instead?

src/api/product/controllers/product.js
'use strict';

/**
 *  product controller
 */

const { createCoreController } = require('@strapi/strapi').factories;

module.exports = createCoreController('api::product.product', {
    count(ctx) {
        var { query } = ctx.request
        return strapi.entityService.count('api::product.product', query);
    }
});

Also, what database are you using?