action=edit problem

Hi,
the option to edit articles suddenly disappeared from wordpress. action=edit runs into an error. If I turn off the plugin, the editing works again.

The debugger says:
Line 177 of file /home/www/clients/xxxxxxxxxxxx/web/wp-content/plugins/easy-woocommerce-discounts-pro/includes/validator/class-wccs-condition-validator.php causes an error of type E_ERROR . Error message: Uncaught Error: Call to a member function products_exists_in_cart() on null in /home/www/clients/xxxxxxxxxxxx/web/wp-content/plugins/easy-woocommerce-discounts-pro/includes/validator/class-wccs-condition -validator.php:177

Stack trace:
#0 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/easy-woocommerce-discounts-pro/includes/validator/class-wccs-shipping-condition-validator.php(32): WCCS_Condition_Validator->products_in_cart(Array, Array)
#1 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/easy-woocommerce-discounts-pro/includes/validator/class-wccs-shipping-condition-validator.php(15): WCCS_Shipping_Condition_Validator->is_valid(Array, Array)
#2 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/easy-woocommerce-discounts-pro/includes/class-wccs-shipping-method.php(201): WCCS_Shipping_Condition_Validator->is_valid_conditions(Array, 'one', Array)
#3 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/easy-woocommerce-discounts-pro/includes/class-wccs-shipping-method.php(58): WCCS_Shipping_Method->get_valid_rules(Array)
#4 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/woocommerce/includes/abstracts/abstract-wc-shipping-method.php(233): WCCS_Shipping_Method->calculate_shipping(Array)
#5 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/woocommerce/includes/class-wc-shipping.php(348): WC_Shipping_Method->get_rates_for_package(Array)
#6 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/woocommerce/includes/class-wc-shipping.php(260): WC_Shipping->calculate_shipping_for_package(Array, 0)
#7 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/StoreApi/Utilities/CartController.php(823): WC_Shipping->calculate_shipping(Array)
#8 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/StoreApi/Schemas/V1/CartSchema.php(340): Automattic\WooCommerce\StoreApi\Utilities\CartController->get_shipping_packages()
#9 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/StoreApi/Routes/V1/Cart.php(50): Automattic\WooCommerce\StoreApi\Schemas\V1\CartSchema->get_item_response(Object(WC_Cart))
#10 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/StoreApi/Routes/V1/AbstractRoute.php(109): Automattic\WooCommerce\StoreApi\Routes\V1\Cart->get_route_response(Object(WP_REST_Request))
#11 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/StoreApi/Routes/V1/AbstractCartRoute.php(102): Automattic\WooCommerce\StoreApi\Routes\V1\AbstractRoute->get_response(Object(WP_REST_Request))
#12 /home/www/clients/xxxxxxxxx/web/wp-includes/rest-api/class-wp-rest-server.php(1171): Automattic\WooCommerce\StoreApi\Routes\V1\AbstractCartRoute->get_response(Object(WP_REST_Request))
#13 /home/www/clients/xxxxxxxxx/web/wp-includes/rest-api/class-wp-rest-server.php(1018): WP_REST_Server->respond_to_request(Object(WP_REST_Request), '/wc/store/v1/ca...', Array, NULL)
#14 /home/www/clients/xxxxxxxxx/web/wp-includes/rest-api.php(535): WP_REST_Server->dispatch(Object(WP_REST_Request))
#15 /home/www/clients/xxxxxxxxx/web/wp-includes/rest-api.php(2884): rest_do_request(Object(WP_REST_Request))
#16 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/Assets/AssetDataRegistry.php(323): rest_preload_api_request(Array, '/wc/store/v1/ca...')
#17 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/BlockTypes/AllProducts.php(40): Automattic\WooCommerce\Blocks\Assets\AssetDataRegistry->hydrate_api_request('/wc/store/v1/ca...')
#18 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/BlockTypes/AllProducts.php(33): Automattic\WooCommerce\Blocks\BlockTypes\AllProducts->hydrate_from_api()
#19 /home/www/clients/xxxxxxxxx/web/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/BlockTypes/AbstractBlock.php(100): Automattic\WooCommerce\Blocks\BlockTypes\AllProducts->enqueue_data()
#20 /home/www/clients/xxxxxxxxx/web/wp-includes/class-wp-hook.php(308): Automattic\WooCommerce\Blocks\BlockTypes\AbstractBlock->enqueue_editor_assets('')
#21 /home/www/clients/xxxxxxxxx/web/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array)
#22 /home/www/clients/xxxxxxxxx/web/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#23 /home/www/clients/xxxxxxxxx/web/wp-admin/edit-form-blocks.php(272): do_action('enqueue_block_e...')
#24 /home/www/clients/xxxxxxxxx/web/wp-admin/post.php(187): require('/home/www/clien...')
#25 {main}
  thrown

Please, help me!
Thks!

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