Post by sunski » Fri May 12, 2017 9:06 am

Hi,

I have few years old installation of opencart (1.5.5.1) 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 1.5.5.1 to 1.5.6.4 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?

Thanks

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Post by EvolveWebHosting » Wed May 17, 2017 2:36 am

The first step is to see if product_id exists in your oc_product_attributes table

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