我多次安装了该软件包,并且安装了不同的版本。但它仍然说
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<div class="ribbon-wrapper-green"><div class="ribbon-green">The Flagship Programme of<br />Aaaaa Aaaaaa Aaaaaaaaa</div></div>
<div class="jumbotron">
<h1>Bootstrap Tutorial</h1>
<p>Bootstrap is the most popular HTML, CSS, and JS framework for developing responsive, mobile-first projects on the web.</p>
</div>
<p>This is some text.</p>
<p>This is another text.</p>
</div>
</body>
</html>
安装后说
Error in library(h2osteam) : there is no package called ‘h2osteam’
我在这里做错了什么?帮助!