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After upgrading Magento version from 2.2.7 to 2.3.5 everything was working fine. But suddenly checkout page is showing an error:
1 exception(s):
Exception #0 (InvalidArgumentException): Unable to serialize value.
Exception #0 (InvalidArgumentException): Unable to serialize value.
<pre>#1 MagentoCheckoutBlockOnepage->getSerializedCheckoutConfig() called at (vendor/magento/module-checkout/view/frontend/templates/onepage.phtml:26)
#2 include() called at (vendor/magento/framework/View/TemplateEngine/Php.php:59)
#3 MagentoFrameworkViewTemplateEnginePhp->render() called at (vendor/magento/framework/Interception/Interceptor.php:58)
#4 MagentoFrameworkViewTemplateEnginePhpInterceptor->___callParent() called at (vendor/magento/framework/Interception/Interceptor.php:138)
#5 MagentoFrameworkViewTemplateEnginePhpInterceptor->MagentoFrameworkInterception{closure}() called at (vendor/magento/framework/Interception/Interceptor.php:153)
#6 MagentoFrameworkViewTemplateEnginePhpInterceptor->___callPlugins() called at (generated/code/Magento/Framework/View/TemplateEngine/Php/Interceptor.php:26)
#7 MagentoFrameworkViewTemplateEnginePhpInterceptor->render() called at (vendor/magento/framework/View/Element/Template.php:271)
#8 MagentoFrameworkViewElementTemplate->fetchView() called at (vendor/magento/framework/View/Element/Template.php:301)
#9 MagentoFrameworkViewElementTemplate->_toHtml() called at (vendor/magento/framework/View/Element/AbstractBlock.php:1100)
#10 MagentoFrameworkViewElementAbstractBlock->MagentoFrameworkViewElement{closure}() called at (vendor/magento/framework/View/Element/AbstractBlock.php:1104)
#11 MagentoFrameworkViewElementAbstractBlock->_loadCache() called at (vendor/magento/framework/View/Element/AbstractBlock.php:674)
#12 MagentoFrameworkViewElementAbstractBlock->toHtml() called at (vendor/magento/framework/View/Layout.php:566)
#13 MagentoFrameworkViewLayout->_renderBlock() called at (vendor/magento/framework/View/Layout.php:542)
#14 MagentoFrameworkViewLayout->renderNonCachedElement() called at (generated/code/Magento/Framework/View/Layout/Interceptor.php:206)
#15 MagentoFrameworkViewLayoutInterceptor->renderNonCachedElement() called at (vendor/magento/framework/View/Layout.php:497)
How can I fix the issue?
asked 38 mins ago
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