Fatal error: Uncaught TypeError: Return value of Fisha\Contentful\Model\News::getCreatedAt() must be of the type string, null returned in /var/www/html/app/code/Fisha/Contentful/Model/News.php:682 Stack trace: #0 /var/www/html/app/code/Fisha/Contentful/view/frontend/templates/widget/news/view.phtml(25): Fisha\Contentful\Model\News->getCreatedAt() #1 /var/www/html/vendor/magento/framework/View/TemplateEngine/Php.php(59): include('/var/www/html/a...') #2 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\View\TemplateEngine\Php->render(Object(Magento\Framework\View\TemplateEngine\Php\Interceptor), '/var/www/html/a...', Array) #3 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\View\TemplateEngine\Php\Interceptor->___callParent('render', Array) #4 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\View\TemplateEngine\Php\Interceptor->Magento\Framework\Interception\{closure}(Object(Fisha\Contentful\Block in /var/www/html/app/code/Fisha/Contentful/Model/News.php on line 682