Works fine in chrome but ‘Access-Control-Allow-Origin’ missing issues in Firefox when fetching to YouTube thumbnail Link.

[virendra05]

I am trying to fetch the YouTube Thumbnail Link Details and and create a file. The code works fine in chrome but not working in Firefox and Safari

Below is the code which I tried to fetch through Console
await fetch("http://img.youtube.com/vi/_WqRK6od-Dg/0.jpg"). then(async (response) => { let type = response.headers.get('content-type'); let blob = await response.blob(); let file = new File([blob], 'thumbnial.jpg', { type }); return file; });

Chrome Screenshot:

Firefox Screenshot:

**FireFox Version: 88.0 (64-bit), Safari Version:14.0.3

Can anyone tell me what's the issue?**