Error: Id must be filled for categories tree

[Abbeywood]

I started using Prestashop 2 weeks ago and I am finding it easy work with. I added a few categories and it was ok. I started products, now I have about 30 products. But at the moment when I attempt to create a new category I receive this error:

 

[PrestaShopException]

Id must be filled for categories tree
at line 97 in file classes/helper/HelperForm.php

92.                     {
93.                         case 'categories':
94.                             if ($categories)
95.                             {
96.                                 if (!isset($params['tree']['id']))
97.                                     throw new PrestaShopException('Id must be filled for categories tree');
98.
99.                                 $tree = new HelperTreeCategories($params['tree']['id'], isset($params['tree']['title']) ? $params['tree']['title'] : null);
100.
101.                                 if (isset($params['name']))
102.                                     $tree->setInputName($params['name']);

 

I searched the internet I found that I can comment this 96/97 lines, which makes it ok but it is still very disordered. Could you tell me what the problem might be and how it can be fixed?

 

Thanks in advance.

[piribipipi]

please try this.. its not the best solution but i believe that works...

 

$params['tree']['id'] ='categories-tree'; // code added

 if (!isset($params['tree']['id']))
97.                                     throw new PrestaShopException('Id must be filled for categories tree');
98.
99.                                 $tree = new HelperTreeCategories($params['tree']['id'], isset($params['tree']['title']) ? $params['tree']['title'] : null);

 

let me know...