Encountering unsupported MIME type

I recently encountered a peculiar issue that I managed to resolve, but I'm curious as to why it occurred in the first place. My project involves node.js with express.

app.get('/eventname/:event', (req, res) => {
res.render('event.hbs', {
    name: req.user.displayName
});
})

Even though there was no specific "/eventname" route defined in my server.js file, the pages loaded successfully. However, my .css files failed to load due to a "MIME type not supported" error. Interestingly, when I removed the '/eventname' part from the code:

app.get('/:event', (req, res) => {
res.render('event.hbs', {
    name: req.user.displayName
});
})

Everything started working smoothly without any issues. I'm puzzled as to why this happened - could I be making a mistake in how I'm using express?

Answer №1

It appears that the issue you are facing is likely due to using a relative path in the <link> tag when importing the CSS file.


For example, if your event page URL is

https://example.com/example-event
, and you have the following code:

<link rel="stylesheet" type="text/css" href="styles.css">

The relative path will resolve to https://example.com/styles.css, which should be correct. However, if your URL is

https://example.com/eventname/example-event
, the relative path will resolve to
https://example.com/eventname/styles.css
, causing an error because it does not match the expected path.

This can lead to the server treating the CSS file as HTML instead, resulting in the error message "MIME type not supported."


To resolve this issue, consider using either an absolute path (relative to your domain) like /styles.css, or ensure a valid relative path for each page, such as ../styles.css for /eventname/:event.

Using an absolute path is recommended for easier maintenance of your application.

Answer №2

Seeing that error indicates your folder isn't in the public directory. To resolve this, move it to the public directory and update the file path to (/style.css)

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