Error after changing to PHP 8.0

Error after changing to PHP 8.0

After switching from PHP 7.4.33 to PHP 8.0 when clicking on some - only some - categories in the frontend, an error page appears with the message: "0 - count(): Argument #1 ($value) must be of type Countable|array, zero given".

All other functions in the shop and on the normal website outside the shop are working normally.

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Aw: Error after changing to PHP 8.0

- Enable Debug System
Joomla / configuration
Debug System: Yes

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Many addons not works for php 8

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Aw: Error after changing to PHP 8.0

In debug mode the following is displayed ( at the moment only on the shipping page). Plugins are up to date and those not needed are disabled:

count(): Argument #1 ($value) must be of type Countable|array, null given

/var/home/juwelen-binder_at/www/components/com_jshopping/shippings/sm_depend_price/sm_depend_price.php:32
Call stack
# Function Location
1 () JROOT/components/com_jshopping/shippings/sm_depend_price/sm_depend_price.php:32
2 sm_depend_price->getPrices() JROOT/components/com_jshopping/tables/shippingmethodprice.php:87
3 jshopShippingMethodPrice->calculateSum() JROOT/components/com_jshopping/models/checkoutshipping.php:47
4 jshopCheckoutShipping->getCheckoutListShippings() JROOT/components/com_jshopping/controllers/checkout.php:250
5 JshoppingControllerCheckout->step4() JROOT/libraries/src/MVC/Controller/BaseController.php:702
6 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_jshopping/jshopping.php:25
7 require_once() JROOT/libraries/src/Component/ComponentHelper.php:402
8 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377
9 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194
10 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233
11 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225
12 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:49

All other works fine in PHP 7.4.33

Aw: Error after changing to PHP 8.0

Install
Calculate for price 1.3.1
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after install
Options / Shipping / Extensions for price calculation

delete 1 DependPrice

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Aw: Error after changing to PHP 8.0

Great! It works!
Many thanks for quick and perfect support!