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_Bundlediscountsrc="Namespace_Modulename::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>
Your composer.json file also support php [ 7.1 ]
{
"name": "namespace/modulename",
"description": "Description module in Magento2",
"require": {
"php": "~5.5.22|~5.6.0|7.0.2|7.0.4|~7.0.6|~7.1.0"
},
"type": "magento2-module",
"license": "GPL-3.0",
"version": "1.0.4",
"authors": [
{
"name": "DJ",
"email": "[email protected]"
}
],
"autoload": {
"files": [
"registration.php"
],
"psr-4": {
"namespace\\modulename\\": ""
}
}