Error message when using Abantecart

[sewnsails]

My installation is taking orders but when I try to access an order or work with products I get this error message.

SQL Error: Table 'sewnsail_aban782.abyf_product_stock_locations' doesn't exist
Error No: 1146
SQL: ALTER TABLE `abyf_product_stock_locations` CHARACTER SET utf8 COLLATE utf8_general_ci; in /home/sewnsails/public_html/AbanteCart/core/database/amysqli.php on line 109

How do I fix this?

[Basara]

Hello.
Looks like something was not installed correctly (most likely upgrade). You need to restore backup or add missing tables manually