I'm using Swagger-ui-express (without JSDOC) in my Express.js app to write documentation for my API. Here's the routing and middleware code (I use swagger.josn file instead of writing comments):
const swaggerUI = require('swagger-ui-express');
const swaggerDoc = require('./swagger.json');
app.use('/apidocs', swaggerUI.serve, swaggerUI.setup(swaggerDoc));
When I go to the route specified for reading the documentation, the page is blank and there's nothing rendered:
As you can see, the route and the swagger-ui-express middleware are working (there's "Swagger UI" and its icon on the tab's title), but I have no idea why it's not rendering anything.
There's also an error in the browser console:
I'm using OpenAPI (Swagger) Editor VSCode extension to see the preview of documentation and it's rendering OK, which means everything is syntactically correct:
I visited this answer, and I checked the response headers. The Content-Type is correct and is set to text/html; charset=utf-8.
I also sent a request via Postman and I got this:
<!-- HTML for static distribution bundle build -->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Swagger UI</title>
<link rel="stylesheet" type="text/css" href="./swagger-ui.css">
<link rel="icon" type="image/png" href="./favicon-32x32.png" sizes="32x32" />
<link rel="icon" type="image/png" href="./favicon-16x16.png" sizes="16x16" />
<style>
html {
box-sizing: border-box;
overflow: -moz-scrollbars-vertical;
overflow-y: scroll;
}
*,
*:before,
*:after {
box-sizing: inherit;
}
body {
margin: 0;
background: #fafafa;
}
</style>
</head>
<body>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
style="position:absolute;width:0;height:0">
<defs>
<symbol viewBox="0 0 20 20" id="unlocked">
<path
d="M15.8 8H14V5.6C14 2.703 12.665 1 10 1 7.334 1 6 2.703 6 5.6V6h2v-.801C8 3.754 8.797 3 10 3c1.203 0 2 .754 2 2.199V8H4c-.553 0-1 .646-1 1.199V17c0 .549.428 1.139.951 1.307l1.197.387C5.672 18.861 6.55 19 7.1 19h5.8c.549 0 1.428-.139 1.951-.307l1.196-.387c.524-.167.953-.757.953-1.306V9.199C17 8.646 16.352 8 15.8 8z">
</path>
</symbol>
<symbol viewBox="0 0 20 20" id="locked">
<path
d="M15.8 8H14V5.6C14 2.703 12.665 1 10 1 7.334 1 6 2.703 6 5.6V8H4c-.553 0-1 .646-1 1.199V17c0 .549.428 1.139.951 1.307l1.197.387C5.672 18.861 6.55 19 7.1 19h5.8c.549 0 1.428-.139 1.951-.307l1.196-.387c.524-.167.953-.757.953-1.306V9.199C17 8.646 16.352 8 15.8 8zM12 8H8V5.199C8 3.754 8.797 3 10 3c1.203 0 2 .754 2 2.199V8z" />
</symbol>
<symbol viewBox="0 0 20 20" id="close">
<path
d="M14.348 14.849c-.469.469-1.229.469-1.697 0L10 11.819l-2.651 3.029c-.469.469-1.229.469-1.697 0-.469-.469-.469-1.229 0-1.697l2.758-3.15-2.759-3.152c-.469-.469-.469-1.228 0-1.697.469-.469 1.228-.469 1.697 0L10 8.183l2.651-3.031c.469-.469 1.228-.469 1.697 0 .469.469.469 1.229 0 1.697l-2.758 3.152 2.758 3.15c.469.469.469 1.229 0 1.698z" />
</symbol>
<symbol viewBox="0 0 20 20" id="large-arrow">
<path
d="M13.25 10L6.109 2.58c-.268-.27-.268-.707 0-.979.268-.27.701-.27.969 0l7.83 7.908c.268.271.268.709 0 .979l-7.83 7.908c-.268.271-.701.27-.969 0-.268-.269-.268-.707 0-.979L13.25 10z" />
</symbol>
<symbol viewBox="0 0 20 20" id="large-arrow-down">
<path
d="M17.418 6.109c.272-.268.709-.268.979 0s.271.701 0 .969l-7.908 7.83c-.27.268-.707.268-.979 0l-7.908-7.83c-.27-.268-.27-.701 0-.969.271-.268.709-.268.979 0L10 13.25l7.418-7.141z" />
</symbol>
<symbol viewBox="0 0 24 24" id="jump-to">
<path d="M19 7v4H5.83l3.58-3.59L8 6l-6 6 6 6 1.41-1.41L5.83 13H21V7z" />
</symbol>
<symbol viewBox="0 0 24 24" id="expand">
<path d="M10 18h4v-2h-4v2zM3 6v2h18V6H3zm3 7h12v-2H6v2z" />
</symbol>
</defs>
</svg>
<div id="swagger-ui"></div>
<script src="./swagger-ui-bundle.js"> </script>
<script src="./swagger-ui-standalone-preset.js"> </script>
<script src="./swagger-ui-init.js"> </script>
<style>
.swagger-ui .topbar .download-url-wrapper {
display: none
}
undefined
</style>
</body>
</html>
Does anybody know why it's not rendering in the browser?
Is it because of the error shown in the console? If yes, what should I do to get rid of it?
Browser: Brave v1.47.186 (Chromium v109.0.5414.119).
I spent lots of time on this, and got nothing.
Out of nowhere I just changed
localhostto127.0.0.1.And it's rendered now!
Edit: This problem only happened on Windows 10. On Fedora Linux
localhostwas fine.