[BUG] Thumbnails don't load if their path contains a "%" character

[Kramoule]

Describe the bug
Thumbnails don't load if their filename contains a "%" character.
I have also investigated the issue.

The docker logs are:

0|YoutubeDL-Material  | URIError: URI malformed
0|YoutubeDL-Material  |     at decodeURIComponent (<anonymous>)
0|YoutubeDL-Material  |     at /app/app.js:1684:21
...(truncated)

The error apparently comes when it's trying to decode the URI path parameter.

YoutubeDL-Material/backend/app.js

Lines 1620 to 1621 in 58f4313

	app.get('/api/thumbnail/:path', optionalJwt, async (req, res) => {
	let file_path = decodeURIComponent(req.params.path);

(The line number in app.js inside the container doesn't correspond with the line in the repo)

But the Express documentation says that req.params is already decoded:

NOTE: Express automatically decodes the values in req.params (using decodeURIComponent).

(Source: https://expressjs.com/en/4x/api.html#req.params)

So the backend here is actually trying to decode an already valid filepath.
For example with a filepath audio/100%Bug.webp: decodeURIComponent("audio/100%Bug.webp") will return an error.

A solution is to simply remove the decodeURIComponent function if it served no purpose.

To Reproduce
Steps to reproduce the behavior:

1. Download any video that has a % character or set a custom output name which contains a "%" ("100%Bug" for example)
2. Go to the main page and see your files

Expected behavior
Your files should display the thumbnail, as usual.

Screenshots

Environment

• YoutubeDL-Material v4.3.2
• Docker tag: latest (optional)

[Kramoule]

Of course, if you download a single video and put a custom output name which doesn't have any "%" in it, everything work fine, but you can't always do that with subscriptions.