Price doesn't show - Reload from moodle error

I use the Hikashop to sell the course, but the price of the courses doesn't show up in the Hikashop product, it shows 0.00 (free). I then go to the Joomdle->shop and select the course, then click on the 'Reload from moodle' button, it gives me the following error:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '1)' at line 1 SQL=INSERT IGNORE INTO qoljv_hikashop_product_category (category_id,product_id) VALUES (,1);

Could you please let me know how to fix this?

Thanks.

Please post your shop related questions on the shop forum, using your subscriber user.