/usr/share/webkitgtk-3.0/resources/error.html is in libwebkitgtk-3.0-common 1.8.0-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | <html>
<head>
<title>Error</title>
<style type="text/css">
body {
 background-color: #fff;
 margin: 0;
 padding: 0;
}
#errorContainer {
 background: #fff;
 min-width: 35em;
 max-width: 35em;
 position: absolute;
 top: 2em;
 left: 1em;
 padding: 10px;
 border: 2px solid #eee;
 -webkit-border-radius: 5px;
}
#errorTitleText {
 font-size: 120%;
 font-weight: bold;
}
#errorMessageText {
 font-size: 80%;
}
</style>
<script type="text/javascript">
function tryagain()
{
 location.reload();
}
</script>
</head>
<body>
<div id="errorContainer">
<div id="errorTitle">
 <p id="errorTitleText">Unable to load page</p>
</div>
<div id="errorMessage">
 <p>Problem occurred while loading the URL %s</p>
 <p id="errorMessageText">%s</a>
</p>
</div>
<form name="bl">
<input type="button" value="Try again" onclick="javascript:tryagain()" />
</form>
</div>
</body>
</html>
 |