Data value must be an traversable array at line 150 in file classes/tree/Tree.php

[Abdillokra]

Hello Guys,

 

I have the folowing exception and I can't find anywhere in the forum the fix for it.

 

It pops up when I try to open the products page in the Back office (I can't access the products page only).

 

Can please any one point to the solution?

 

[PrestaShopException]

Data value must be an traversable array
at line 150 in file classes/tree/Tree.php

145. }
146.
147. public function setDataSearch($value)
148. {
149. if (!is_array($value) && !$value instanceof Traversable) {
150. throw new PrestaShopException('Data value must be an traversable array');
151. }
152.
153. $this->_data_search = $value;
154. return $this;
155. }

• TreeCore->setDataSearch - [line 125 - classes/helper/HelperTreeCategories.php] - [1 Arguments]
  120. if (!empty($children)) {
  121. $tree[$root_category]['children'] = $children;
  122. }
  123.
  124. $this->setData($tree);
  125. $this->setDataSearch(Category::getAllCategoriesName($root_category, $lang, false, null, $this->useShopRestriction()));
  126. }
  127. }
  128.
  129. return $this->_data;
  130. }
• HelperTreeCategoriesCore->getData - [line 311 - classes/helper/HelperTreeCategories.php]
  306. }
  307.
  308. public function render($data = null)
  309. {
  310. if (!isset($data)) {
  311. $data = $this->getData();
  312. }
  313.
  314. if (isset($this->_disabled_categories)
  315. && !empty($this->_disabled_categories)) {
  316. $this->_disableCategories($data, $this->getDisabledCategories());
• HelperTreeCategoriesCore->render - [line 2506 - controllers/admin/AdminProductsController.php]
  2501. $tree->setAttribute('is_category_filter', (bool)$this->id_current_category)
  2502. ->setAttribute('base_url', preg_replace('#&id_category=[0-9]*#', '', self::$currentIndex).'&token='.$this->token)
  2503. ->setInputName('id-category')
  2504. ->setRootCategory(Category::getRootCategory()->id)
  2505. ->setSelectedCategories(array((int)$id_category));
  2506. $this->tpl_list_vars['category_tree'] = $tree->render();
  2507.
  2508. // used to build the new url when changing category
  2509. $this->tpl_list_vars['base_url'] = preg_replace('#&id_category=[0-9]*#', '', self::$currentIndex).'&token='.$this->token;
  2510. }
  2511. // @todo module free
• AdminProductsControllerCore->initContent - [line 189 - classes/controller/Controller.php]
  184. if (!$this->content_only && ($this->display_header || (isset($this->className) && $this->className))) {
  185. $this->initHeader();
  186. }
  187.
  188. if ($this->viewAccess()) {
  189. $this->initContent();
  190. } else {
  191. $this->errors[] = Tools::displayError('Access denied.');
  192. }
  193.
  194. if (!$this->content_only && ($this->display_footer || (isset($this->className) && $this->className))) {
• ControllerCore->run - [line 367 - classes/Dispatcher.php]
  362. if (isset($params_hook_action_dispatcher)) {
  363. Hook::exec('actionDispatcher', $params_hook_action_dispatcher);
  364. }
  365.
  366. // Running controller
  367. $controller->run();
  368. } catch (PrestaShopException $e) {
  369. $e->displayMessage();
  370. }
  371. }
  372.
• DispatcherCore->dispatch - [line 58 - admin345/index.php]
  53. if (!isset($_REQUEST['controller']) && isset($_REQUEST['tab'])) {
  54. $_REQUEST['controller'] = strtolower($_REQUEST['tab']);
  55. }
  56.
  57. // Prepare and trigger admin dispatcher
  58. Dispatcher::getInstance()->dispatch();

Edited September 8, 2017 by Abdillokra (see edit history)

[Abdillokra]

Could find the solution to the exception despite going back to a previous back-up and doing the same modifications.

 

Anyway, now the product page displays as normal. 

 

Thus the importance to keep daily back-up!!!!!

[El Patron]

this post might help...you may need to right click page and translate but seems there is issue with smartdatasoft blog module.

 

https://www.webempresa.com/foro/44-M%C3%B3dulos-PrestaShop/150453-p%C3%A1gina-PrestaShop-Exception-Treephp.html