Compare with similar Products

Fatal error: Uncaught Error: Call to a member function count() on integer in /var/www/udoo/shop/pub/app/code/Udoo/Theme/view/frontend/templates/product/view/products_similar.phtml:23 Stack trace: #0 /var/www/udoo/shop/pub/vendor/magento/framework/View/TemplateEngine/Php.php(59): include() #1 /var/www/udoo/shop/pub/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\View\TemplateEngine\Php->render(Object(Magento\Catalog\Block\Product\ListProduct\Interceptor), '/var/www/udoo/s...', Array) #2 /var/www/udoo/shop/pub/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\View\TemplateEngine\Php\Interceptor->___callParent('render', Array) #3 /var/www/udoo/shop/pub/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\View\TemplateEngine\Php\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Catalog\Block\Product\ListProduct\Interceptor), '/var/www/udoo/s...', Array) #4 /var/www/udoo/shop/pub/generated/code/Magento/Framework/View/TemplateEn in /var/www/udoo/shop/pub/app/code/Udoo/Theme/view/frontend/templates/product/view/products_similar.phtml on line 23