Error in main process

[Gizmodo]

Describe the bug
Ive try to download two videos from YouTube and get an error

Screenshots

Additional info (please complete the following information):

• OS: Win11
• Application version 2.5.4
• Application type installer

[StefanLobbenmeier]

this is very curious - apparently instead of getting proper json from yt-dlp we just got 4

I can reproduce the javascript error with this code:

var liveDataObj = JSON.parse("4")
"fragment_count" in liveDataObj

which is what must have happened in this piece of code:

youtube-dl-gui/modules/download/DownloadQuery.js

Lines 186 to 194 in 3f423bf

	let liveDataObj;
	try {
	liveDataObj = JSON.parse(liveData.slice(liveData.indexOf('{')));
	} catch(e) {
	return;
	}
	let percentage;
	if ("fragment_count" in liveDataObj) {

Can you share the video urls so I can attempt to reproduce?