I have few years old installation of opencart (18.104.22.168) with theme Journal
And because we are doing some work on our e-shop, I want to upgrade to some of new version 2
First I wanted to try to upgrade from 22.214.171.124 to 126.96.36.199 but no success
After start of upgrade I have this message:
Notice: Error: Can't DROP 'product_id'; check that column/key exists
Error No: 1091
ALTER TABLE `oc_product_attribute` DROP INDEX `product_id` in /disk_1/www/cz/sunskisport/www/system/database/mysql.php on line 50
Can you help me please, what to do? Is there any easy solution? Some advice?
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