prestashop stop to create combinations

Hi i have a big problem ,i see other tips on same issue but anyone solve mine. I use ps 1.7.7.5 with php 7.3 i'm not a developer Now everytime i try to create an attribute (on old or new product) return me error "can update the setting" so i launch the debug and return that error was on $combination = $attributesCombinations[0] i see on sql field,cache....everythings but ... someone can help me? thanks

error 500 Matched route "admin_combination_generate_form". Hide context [▼ "route" => "admin_combination_generate_form" "route_parameters" => [▶] "request_uri" => "http://www.essenzetotalstyle.com/admin095b5akmg/index.php/sell/catalog/products/combinations/form/0?_token=nIT8EY26uezsgxxLB_qlJBtP30k-t7-ZEvIdgtwp6YM" "method" => "GET"

stack trace Symfony\Component\Debug\Exception\ContextErrorException: Notice: Undefined offset: 0

at src/Adapter/CombinationDataProvider.php:126 at PrestaShop\PrestaShop\Adapter\CombinationDataProvider->completeCombination(array(), object(Product)) (src/Adapter/CombinationDataProvider.php:107) at PrestaShop\PrestaShop\Adapter\CombinationDataProvider->getFormCombinations(array('0'), 1) (src/PrestaShopBundle/Controller/Admin/CombinationController.php:53) at PrestaShopBundle\Controller\Admin\CombinationController->generateCombinationFormAction(array('0')) (vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpKernel.php:151) at Symfony\Component\HttpKernel\HttpKernel->handleRaw(object(Request), 1) (vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpKernel.php:68) at Symfony\Component\HttpKernel\HttpKernel->handle(object(Request), 1, false) (vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Kernel.php:200) at Symfony\Component\HttpKernel\Kernel->handle(object(Request), 1, false) (admin095b5akmg/index.php:82)

Symfony\Component\Debug\Exception
ContextErrorException in src/Adapter/CombinationDataProvider.php (line 126) * * @return array */ public function completeCombination($attributesCombinations, $product) { $combination = $attributesCombinations[0]; $attribute_price_impact = 0; if ($combination['price'] > 0) { $attribute_price_impact = 1; } elseif ($combination['price'] < 0) {

CombinationDataProvider->completeCombination(array(), object(Product))
in src/Adapter/CombinationDataProvider.php (line 107) $product = new Product($productId); $combinations = []; foreach ($combinationIds as $combinationId) { $combinations[$combinationId] = $this->completeCombination( $product->getAttributeCombinationsById( $combinationId, $languageId ), $product );

CombinationDataProvider->getFormCombinations(array('0'), 1)
in src/PrestaShopBundle/Controller/Admin/CombinationController.php (line 53) if ($combinationIds === false || count($combinationIds) == 0) { return $response; } $combinationDataProvider = $this->get('prestashop.adapter.data_provider.combination'); $combinations = $combinationDataProvider->getFormCombinations($combinationIds, (int) $this->getContext()->language->id); $formFactory = $this->get('form.factory'); foreach ($combinations as $combinationId => $combination) { $forms[] = $formFactory->createNamed( "combination_$combinationId",

CombinationController->generateCombinationFormAction(array('0'))
in vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpKernel.php (line 151) $this->dispatcher->dispatch(KernelEvents::CONTROLLER_ARGUMENTS, $event); $controller = $event->getController(); $arguments = $event->getArguments(); // call controller $response = \call_user_func_array($controller, $arguments); // view if (!$response instanceof Response) { $event = new GetResponseForControllerResultEvent($this, $request, $type, $response); $this->dispatcher->dispatch(KernelEvents::VIEW, $event);