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Strange error on some products with characteristics

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2 years 6 months ago #359851 by verzevoul
Strange error on some products with characteristics was created by verzevoul
-- HikaShop version -- : 5.0.3
-- Joomla version -- : 4.4.3
-- PHP version -- : 8.1
-- Error-message(debug-mod must be tuned on) -- : Attempt to modify property "values" on null

Hello.
I m facing an error Attempt to modify property "values" on null
Code:
Call stack # Function Location 1 () JROOT/administrator/components/com_hikashop/classes/product.php:2187 2 hikashopProductClass->addCharacteristics() JROOT/components/com_hikashop/views/product/view.html.php:1674 3 ProductViewProduct->show() JROOT/components/com_hikashop/views/product/view.html.php:28 4 ProductViewProduct->display() JROOT/libraries/src/MVC/Controller/BaseController.php:660 5 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/administrator/components/com_hikashop/helpers/helper.php:2577 6 hikashopController->display() JROOT/administrator/components/com_hikashop/helpers/helper.php:2290 7 hikashopController->show() JROOT/libraries/src/MVC/Controller/BaseController.php:693 8 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/administrator/components/com_hikashop/helpers/helper.php:2555 9 hikashopController->execute() JROOT/components/com_hikashop/hikashop.php:88 10 require_once() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:71 11 Joomla\CMS\Dispatcher\LegacyComponentDispatcher::Joomla\CMS\Dispatcher\{closure}() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:73 12 Joomla\CMS\Dispatcher\LegacyComponentDispatcher->dispatch() JROOT/libraries/src/Component/ComponentHelper.php:361 13 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:208 14 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:249 15 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:293 16 Joomla\CMS\Application\CMSApplication->execute() JROOT/includes/app.php:61 17 require_once() JROOT/index.php:32

on some products with characteristics
On J3 they are working fine, the issue is only on J4

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2 years 6 months ago #359855 by nicolas
Replied by nicolas on topic Strange error on some products with characteristics
Hi,

I think it's because the characteristics linked to the main product are (at least one) different from the characteristics linked to one or several variants of the product. This should normally not happen.
And because PHP 8.1 is stricter than previous versions, you get a fatal error instead of a warning which was hidden.
I suppose you must be using an older version of PHP on your J3 website.
Add the code:
Code:
if(!isset($element->characteristics[$characteristic->characteristic_parent_id])) { continue; }
before the line of the error (2187) in /administrator/components/com_hikashop/classes/product.php and it should avoid generating the error.
The following user(s) said Thank You: verzevoul

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2 years 6 months ago #359892 by verzevoul
Replied by verzevoul on topic Strange error on some products with characteristics
Sorry to spam this topic Nicola.
But I wonder if there is a way I discover what is causing the rerrects to http. When I add the rule to htaccess or/ and joomla backend (entrire site https) , I get error for too many redirections.
Like a plugin or something is causing it.
Do you have an idea why ?

Thank you!

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2 years 6 months ago #359893 by nicolas
Replied by nicolas on topic Strange error on some products with characteristics
Hi,

Normally, that's made by a rule in the htaccess.
So that's where I would first look.

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2 years 6 months ago #359895 by verzevoul
Replied by verzevoul on topic Strange error on some products with characteristics
ok, I found it. It was hikashop no ssl plugin. It is the first time I see this plugin. I diasbled it and it is now ok.
Thanks

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2 years 6 months ago #359896 by nicolas
Replied by nicolas on topic Strange error on some products with characteristics
Hi,

Ah yes. That's true HikaShop has this plugin to be able to remove the https outside the checkout.
That's something that was asked by some years ago.
Now, websites normally always use https, so it should normally not be used.

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