Access to FS from Browser


It’s not Brave-specific question, I encountered this issue in Google Chrome as well. But I’d like to discuss it here first, I hope someone can give me some answer.

When I’m trying to upload big folder (2 GB) to my server, I keep getting error:

Firefox can handle 2 GB and upload it to my server.
Please can you describe what this error is a little?
And is there any way that browser can access the same folder from OS’s FS? I know - there are a lot of security concerns for that, but please suggest any possible way: how can one upload big folder to my server via browser?

upd: I’m getting this error when I’m trying to upload big folder to

I thought that this problem concerns everyone: and brave browser