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1091 Error: Opencart

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Hello everyone!
Sorry for my english ...
I'm new to the forum, I need your help!
 
I'm trying to upgrade from OpenCart version 1.5.2.1 to version 2.3.0.2.
 
The error in question is this:
 
Error Code(0): Error: Can't DROP 'PRIMARY'; check that column/key exists
Error No: 1091
ALTER TABLE `category` DROP PRIMARY KEY, ADD PRIMARY KEY(`category_id`, `parent_id`) in 
.../system/library/db/mysqli.php on line 40
 
thanks in advance for your reply,
Simone
 
asked Apr 11, 2017 in Opencart by harsh (8,710 points)

1 Answer

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I have the same problem, did u find any solutions?
answered Jun 7, 2017 by Alexx

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