This error occurred if xml file has cacheable="false" exist.
<page layout="1column" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<head>
<link src="Magedelight_Bundlediscount::js/cart-promotions.js"/>
</head>
<body>
<referenceContainer name="content">
<block class="Namesapce\Modulename\Block\Class" name="test" template="test.phtml" cacheable="false" after="-">
</block>
</referenceContainer>
</body>